Update php-qrcode and php-settings-container for PHP 8.1

By running the following command after updating composer.json

```
composer update chillerlan/php-qrcode chillerlan/php-settings-container
```

This change fixes a deprecation warning from Preferences ->
Personal data / Authentication -> Authenticator (OTP).

```
Return type of chillerlan\Settings\SettingsContainerAbstract::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
1. vendor/chillerlan/php-settings-container/src/SettingsContainerAbstract.php(19): ttrss_error_handler(Return type of chillerlan\Settings\SettingsContainerAbstract::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice, vendor/chillerlan/php-settings-container/src/SettingsContainerAbstract.php)
2. vendor/composer/ClassLoader.php(571): include(/usr/share/webapps/tt-rss/vendor/chillerlan/php-settings-container/src/SettingsContainerAbstract.php)
3. vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile(/usr/share/webapps/tt-rss/vendor/composer/../chillerlan/php-settings-container/src/SettingsContainerAbstract.php)
4. vendor/chillerlan/php-qrcode/src/QROptions.php(59): loadClass(chillerlan\Settings\SettingsContainerAbstract)
5. vendor/composer/ClassLoader.php(571): include(/usr/share/webapps/tt-rss/vendor/chillerlan/php-qrcode/src/QROptions.php)
6. vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile(/usr/share/webapps/tt-rss/vendor/composer/../chillerlan/php-qrcode/src/QROptions.php)
7. vendor/chillerlan/php-qrcode/src/QRCode.php(113): loadClass(chillerlan\QRCode\QROptions)
8. classes/pref/prefs.php(958): __construct()
9. classes/pref/prefs.php(469): _get_otp_qrcode_img()
10. classes/pref/prefs.php(541): index_auth_2fa()
11. backend.php(136): index_auth()
```

The issue is fixed in php-settings-container 2.1.1 [1] Here I use the
latest php-qrcode version for another PHP 8.1 fix [2].

[1] https://github.com/chillerlan/php-settings-container/commit/68bc5019c8b38956c83906431ef879668366b036#diff-359c7f7a6d32d9935951e1b0742eb116fb654f4a932c8d40328bb5dcab2fa111L162
[2] https://github.com/chillerlan/php-qrcode/issues/97

19 files changed, 348 insertions, 217 deletions

diff --git a/vendor/chillerlan/php-settings-container/.github/FUNDING.yml b/vendor/chillerlan/php-settings-container/.github/FUNDING.yml
new file mode 100644
index 000000000..16a077f52
--- /dev/null
+++ b/vendor/chillerlan/php-settings-container/.github/FUNDING.yml
@@ -0,0 +1,2 @@
+ko_fi: codemasher
+custom: "https://www.paypal.com/donate?hosted_button_id=WLYUNAT9ZTJZ4"
diff --git a/vendor/chillerlan/php-settings-container/.github/workflows/tests.yml b/vendor/chillerlan/php-settings-container/.github/workflows/tests.yml
new file mode 100644
index 000000000..e52681849
--- /dev/null
+++ b/vendor/chillerlan/php-settings-container/.github/workflows/tests.yml
@@ -0,0 +1,107 @@
+# https://help.github.com/en/categories/automating-your-workflow-with-github-actions
+# https://github.com/sebastianbergmann/phpunit/blob/master/.github/workflows/ci.yml
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+
+name: "CI"
+
+jobs:
+
+  static-code-analysis:
+    name: "Static Code Analysis"
+
+    runs-on: ubuntu-latest
+
+    env:
+      PHAN_ALLOW_XDEBUG: 0
+      PHAN_DISABLE_XDEBUG_WARN: 1
+
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v2
+
+      - name: "Install PHP"
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: "7.4"
+          tools: pecl
+          coverage: none
+          extensions: ast, json
+
+      - name: "Update dependencies with composer"
+        run: composer update --no-interaction --no-ansi --no-progress --no-suggest
+
+      - name: "Run phan"
+        run: php vendor/bin/phan
+
+  build-docs:
+    name: "Build and publish Docs"
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: "Checkout sources"
+        uses: actions/checkout@v2
+
+      - name: "Install PHP"
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: "7.4"
+          coverage: none
+          tools: phpDocumentor
+          extensions: json
+
+      - name: "Build Docs"
+        run: phpdoc --config=phpdoc.xml
+
+      - name: "Publish Docs to gh-pages"
+        uses: JamesIves/[email protected]
+        with:
+          branch: gh-pages
+          folder: docs
+          clean: true
+
+  tests:
+    name: "Unit Tests"
+
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - windows-latest
+        php-version:
+          - "7.4"
+          - "8.0"
+          - "8.1"
+
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v2
+
+      - name: "Install PHP with extensions"
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          coverage: pcov
+          extensions: json
+
+      - name: "Install dependencies with composer"
+        run: composer update --no-ansi --no-interaction --no-progress --no-suggest
+
+      - name: "Run tests with phpunit"
+        run: php vendor/phpunit/phpunit/phpunit --configuration=phpunit.xml
+
+      - name: "Send code coverage report to Codecov.io"
+        uses: codecov/codecov-action@v1
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/vendor/chillerlan/php-settings-container/.gitignore b/vendor/chillerlan/php-settings-container/.gitignore
index e313cba45..142dd453a 100644
--- a/vendor/chillerlan/php-settings-container/.gitignore
+++ b/vendor/chillerlan/php-settings-container/.gitignore
@@ -1,4 +1,4 @@
-.idea
-.vendor
+/.build
+/.idea
+/vendor
 composer.lock
-*.phpunit.result.cache
diff --git a/vendor/chillerlan/php-settings-container/.phan/config.php b/vendor/chillerlan/php-settings-container/.phan/config.php
new file mode 100644
index 000000000..468bd9983
--- /dev/null
+++ b/vendor/chillerlan/php-settings-container/.phan/config.php
@@ -0,0 +1,54 @@
+<?php
+/**
+ * This configuration will be read and overlaid on top of the
+ * default configuration. Command-line arguments will be applied
+ * after this file is read.
+ */
+return [
+	// Supported values: `'5.6'`, `'7.0'`, `'7.1'`, `'7.2'`, `'7.3'`,
+	// `'7.4'`, `null`.
+	// If this is set to `null`,
+	// then Phan assumes the PHP version which is closest to the minor version
+	// of the php executable used to execute Phan.
+	//
+	// Note that the **only** effect of choosing `'5.6'` is to infer
+	// that functions removed in php 7.0 exist.
+	// (See `backward_compatibility_checks` for additional options)
+	'target_php_version' => '7.4',
+
+	// A list of directories that should be parsed for class and
+	// method information. After excluding the directories
+	// defined in exclude_analysis_directory_list, the remaining
+	// files will be statically analyzed for errors.
+	//
+	// Thus, both first-party and third-party code being used by
+	// your application should be included in this list.
+	'directory_list' => [
+		'examples',
+		'src',
+		'tests',
+		'vendor',
+	],
+
+	// A regex used to match every file name that you want to
+	// exclude from parsing. Actual value will exclude every
+	// "test", "tests", "Test" and "Tests" folders found in
+	// "vendor/" directory.
+	'exclude_file_regex' => '@^vendor/.*/(tests?|Tests?)/@',
+
+	// A directory list that defines files that will be excluded
+	// from static analysis, but whose class and method
+	// information should be included.
+	//
+	// Generally, you'll want to include the directories for
+	// third-party code (such as "vendor/") in this list.
+	//
+	// n.b.: If you'd like to parse but not analyze 3rd
+	//       party code, directories containing that code
+	//       should be added to both the `directory_list`
+	//       and `exclude_analysis_directory_list` arrays.
+	'exclude_analysis_directory_list' => [
+		'tests',
+		'vendor',
+	],
+];
diff --git a/vendor/chillerlan/php-settings-container/.scrutinizer.yml b/vendor/chillerlan/php-settings-container/.scrutinizer.yml
index 7fdd2a4dc..daeb475f4 100644
--- a/vendor/chillerlan/php-settings-container/.scrutinizer.yml
+++ b/vendor/chillerlan/php-settings-container/.scrutinizer.yml
@@ -1,3 +1,12 @@
+build:
+  nodes:
+    analysis:
+      tests:
+        override:
+          - php-scrutinizer-run
+  environment:
+    php: 8.0.0
+
 filter:
   excluded_paths:
     - examples/*
diff --git a/vendor/chillerlan/php-settings-container/.travis.yml b/vendor/chillerlan/php-settings-container/.travis.yml
deleted file mode 100644
index c2ad210ed..000000000
--- a/vendor/chillerlan/php-settings-container/.travis.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-language: php
-
-matrix:
-  include:
-  - php: 7.2
-  - php: 7.3
-  - php: 7.4
-  - php: 8.0
-  - php: nightly
-  allow_failures:
-  - php: nightly
-
-
-before_script: travis_retry composer install --no-interaction --prefer-source
-
-script: vendor/bin/phpunit --configuration phpunit.xml --coverage-clover clover.xml
-
-after_script: bash <(curl -s https://codecov.io/bash)
diff --git a/vendor/chillerlan/php-settings-container/README.md b/vendor/chillerlan/php-settings-container/README.md
index f3bb26c5e..b5fd4ad27 100644
--- a/vendor/chillerlan/php-settings-container/README.md
+++ b/vendor/chillerlan/php-settings-container/README.md
@@ -1,52 +1,46 @@
 # chillerlan/php-settings-container
 
-A container class for immutable settings objects. Not a DI container. PHP 7.2+
-- [`SettingsContainerInterface`](https://github.com/chillerlan/php-settings-container/blob/master/src/SettingsContainerInterface.php) provides immutable properties with magic getter & setter and some fancy
+A container class for immutable settings objects. Not a DI container. PHP 7.4+
+- [`SettingsContainerInterface`](https://github.com/chillerlan/php-settings-container/blob/main/src/SettingsContainerInterface.php) provides immutable properties with magic getter & setter and some fancy - decouple configuration logic from your application!
 
+[![PHP Version Support][php-badge]][php]
 [![version][packagist-badge]][packagist]
 [![license][license-badge]][license]
-[![Travis][travis-badge]][travis]
 [![Coverage][coverage-badge]][coverage]
 [![Scrunitizer][scrutinizer-badge]][scrutinizer]
 [![Packagist downloads][downloads-badge]][downloads]
-[![PayPal donate][donate-badge]][donate]
+[![Continuous Integration][gh-action-badge]][gh-action]
 
-[packagist-badge]: https://img.shields.io/packagist/v/chillerlan/php-settings-container.svg?style=flat-square
+[php-badge]: https://img.shields.io/packagist/php-v/chillerlan/php-settings-container?logo=php&color=8892BF
+[php]: https://www.php.net/supported-versions.php
+[packagist-badge]: https://img.shields.io/packagist/v/chillerlan/php-settings-container.svg?logo=packagist
 [packagist]: https://packagist.org/packages/chillerlan/php-settings-container
-[license-badge]: https://img.shields.io/github/license/chillerlan/php-settings-container.svg?style=flat-square
-[license]: https://github.com/chillerlan/php-settings-container/blob/master/LICENSE
-[travis-badge]: https://img.shields.io/travis/chillerlan/php-settings-container.svg?style=flat-square
-[travis]: https://travis-ci.org/chillerlan/php-settings-container
-[coverage-badge]: https://img.shields.io/codecov/c/github/chillerlan/php-settings-container.svg?style=flat-square
+[license-badge]: https://img.shields.io/github/license/chillerlan/php-settings-container.svg
+[license]: https://github.com/chillerlan/php-settings-container/blob/main/LICENSE
+[coverage-badge]: https://img.shields.io/codecov/c/github/chillerlan/php-settings-container.svg?logo=codecov
 [coverage]: https://codecov.io/github/chillerlan/php-settings-container
-[scrutinizer-badge]: https://img.shields.io/scrutinizer/g/chillerlan/php-settings-container.svg?style=flat-square
+[scrutinizer-badge]: https://img.shields.io/scrutinizer/g/chillerlan/php-settings-container.svg?logo=scrutinizer
 [scrutinizer]: https://scrutinizer-ci.com/g/chillerlan/php-settings-container
-[downloads-badge]: https://img.shields.io/packagist/dt/chillerlan/php-settings-container.svg?style=flat-square
+[downloads-badge]: https://img.shields.io/packagist/dt/chillerlan/php-settings-container.svg?logo=packagist
 [downloads]: https://packagist.org/packages/chillerlan/php-settings-container/stats
-[donate-badge]: https://img.shields.io/badge/donate-paypal-ff33aa.svg?style=flat-square
-[donate]: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WLYUNAT9ZTJZ4
+[gh-action-badge]: https://github.com/chillerlan/php-settings-container/workflows/CI/badge.svg
+[gh-action]: https://github.com/chillerlan/php-settings-container/actions?query=workflow%3A%22CI%22
 
 ## Documentation
 
 ### Installation
 **requires [composer](https://getcomposer.org)**
 
-*composer.json* (note: replace `dev-master` with a version boundary)
+*composer.json* (note: replace `dev-main` with a [version constraint](https://getcomposer.org/doc/articles/versions.md#writing-version-constraints), e.g. `^2.1` - see [releases](https://github.com/chillerlan/php-settings-container/releases) for valid versions)
 ```json
 {
 	"require": {
-		"php": "^7.2",
-		"chillerlan/php-settings-container": "^1.0"
+		"php": "^7.4",
+		"chillerlan/php-settings-container": "dev-main"
 	}
 }
 ```
 
-### Manual installation
-Download the desired version of the package from [master](https://github.com/chillerlan/php-settings-container/archive/master.zip) or 
-[release](https://github.com/chillerlan/php-settings-container/releases) and extract the contents to your project folder.  After that:
-- run `composer install` to install the required dependencies and generate `/vendor/autoload.php`.
-- if you use a custom autoloader, point the namespace `chillerlan\Settings` to the folder `src` of the package 
-
 Profit!
 
 ## Usage
@@ -140,7 +134,7 @@ var_dump($container->what); // -> md5 hash of "some value"
 
 ### API
 
-#### [`SettingsContainerAbstract`](https://github.com/chillerlan/php-settings-container/blob/master/src/SettingsContainerAbstract.php)
+#### [`SettingsContainerAbstract`](https://github.com/chillerlan/php-settings-container/blob/main/src/SettingsContainerAbstract.php)
 
 method | return  | info
 -------- | ----  | -----------
diff --git a/vendor/chillerlan/php-settings-container/composer.json b/vendor/chillerlan/php-settings-container/composer.json
index 4464e6e8a..1d89b6c41 100644
--- a/vendor/chillerlan/php-settings-container/composer.json
+++ b/vendor/chillerlan/php-settings-container/composer.json
@@ -1,12 +1,12 @@
 {
 	"name": "chillerlan/php-settings-container",
-	"description": "A container class for immutable settings objects. Not a DI container. PHP 7.2+",
+	"description": "A container class for immutable settings objects. Not a DI container. PHP 7.4+",
 	"homepage": "https://github.com/chillerlan/php-settings-container",
 	"license": "MIT",
 	"type": "library",
 	"minimum-stability": "stable",
 	"keywords": [
-		"php7", "helper", "container", "settings"
+		"php7", "helper", "container", "settings", "configuration"
 	],
 	"authors": [
 		{
@@ -20,11 +20,12 @@
 		"source": "https://github.com/chillerlan/php-settings-container"
 	},
 	"require": {
-		"php": "^7.2 || ^8.0",
+		"php": "^7.4 || ^8.0",
 		"ext-json": "*"
 	},
 	"require-dev": {
-		"phpunit/phpunit": "^8.4"
+		"phan/phan": "^5.3",
+		"phpunit/phpunit": "^9.5"
 	},
 	"autoload": {
 		"psr-4": {
@@ -36,5 +37,14 @@
 			"chillerlan\\SettingsTest\\": "tests/",
 			"chillerlan\\SettingsExamples\\": "examples/"
 		}
+	},
+	"scripts": {
+		"phpunit": "@php vendor/bin/phpunit",
+		"phan": "@php vendor/bin/phan"
+	},
+	"config": {
+		"lock": false,
+		"sort-packages": true,
+		"platform-check": true
 	}
 }
diff --git a/vendor/chillerlan/php-settings-container/docs/Readme.md b/vendor/chillerlan/php-settings-container/docs/Readme.md
new file mode 100644
index 000000000..7749a1e7f
--- /dev/null
+++ b/vendor/chillerlan/php-settings-container/docs/Readme.md
@@ -0,0 +1,13 @@
+# Auto generated API documentation
+
+The API documentation can be auto generated with [phpDocumentor](https://www.phpdoc.org/). 
+There is an [online version available](https://chillerlan.github.io/php-settings-container/) via the [gh-pages branch](https://github.com/chillerlan/php-settings-container/tree/gh-pages) that is [automatically deployed](https://github.com/chillerlan/php-settings-container/deployments) on each push to main.
+
+Locally created docs will appear in this directory. If you'd like to create local docs, please follow these steps:
+
+- [download phpDocumentor](https://github.com/phpDocumentor/phpDocumentor/releases) v3+ as .phar archive
+- run it in the repository root directory:
+  - on Windows `c:\path\to\php.exe c:\path\to\phpDocumentor.phar --config=phpdoc.xml`
+  - on Linux just `php /path/to/phpDocumentor.phar --config=phpdoc.xml`
+- open [index.html](./index.html) in a browser
+- profit!
diff --git a/vendor/chillerlan/php-settings-container/examples/advanced.php b/vendor/chillerlan/php-settings-container/examples/advanced.php
index 1030b0a29..f11642c83 100644
--- a/vendor/chillerlan/php-settings-container/examples/advanced.php
+++ b/vendor/chillerlan/php-settings-container/examples/advanced.php
@@ -1,6 +1,5 @@
 <?php
 /**
- * @filesource   advanced.php
  * @created      28.08.2018
  * @author       smiley <[email protected]>
  * @copyright    2018 smiley
@@ -15,7 +14,7 @@ require_once __DIR__.'/../vendor/autoload.php';
 
 // from library #1
 trait SomeOptions{
-	protected $foo;
+	protected string $foo = '';
 
 	// this method will be called in SettingsContainerAbstract::__construct() after the properties have been set
 	protected function SomeOptions(){
@@ -26,7 +25,7 @@ trait SomeOptions{
 
 // from library #2
 trait MoreOptions{
-	protected $bar = 'whatever'; // provide default values
+	protected string $bar = 'whatever'; // provide default values
 }
 
 $commonOptions = [
@@ -37,10 +36,16 @@ $commonOptions = [
 ];
 
 // now plug the several library options together to a single object
-/** @var \chillerlan\Settings\SettingsContainerInterface $container */
-$container = new class ($commonOptions) extends SettingsContainerAbstract{
+
+/**
+ * @property string $foo
+ * @property string $bar
+ */
+class MySettings extends SettingsContainerAbstract{
 	use SomeOptions, MoreOptions; // ...
 };
 
+$container = new MySettings($commonOptions);
+
 var_dump($container->foo); // -> WHATEVER (constructor ran strtoupper on the value)
 var_dump($container->bar); // -> nothing
diff --git a/vendor/chillerlan/php-settings-container/examples/simple.php b/vendor/chillerlan/php-settings-container/examples/simple.php
index d8d81095b..acdbe4cb3 100644
--- a/vendor/chillerlan/php-settings-container/examples/simple.php
+++ b/vendor/chillerlan/php-settings-container/examples/simple.php
@@ -1,6 +1,5 @@
 <?php
 /**
- * @filesource   simple.php
  * @created      28.08.2018
  * @author       smiley <[email protected]>
  * @copyright    2018 smiley
diff --git a/vendor/chillerlan/php-settings-container/phpdoc.xml b/vendor/chillerlan/php-settings-container/phpdoc.xml
new file mode 100644
index 000000000..d440f1d8a
--- /dev/null
+++ b/vendor/chillerlan/php-settings-container/phpdoc.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<phpdoc>
+	<parser>
+		<target>docs</target>
+		<encoding>utf8</encoding>
+		<markers>
+			<item>TODO</item>
+		</markers>
+	</parser>
+	<transformer>
+		<target>docs</target>
+	</transformer>
+	<files>
+		<directory>src</directory>
+		<directory>tests</directory>
+	</files>
+	<transformations>
+		<template name="responsive-twig"/>
+	</transformations>
+</phpdoc>
diff --git a/vendor/chillerlan/php-settings-container/phpmd.xml b/vendor/chillerlan/php-settings-container/phpmd.xml
deleted file mode 100644
index 3ba7e11b7..000000000
--- a/vendor/chillerlan/php-settings-container/phpmd.xml
+++ /dev/null
@@ -1,35 +0,0 @@
-<?xml version="1.0"?>
-<ruleset name="codemasher/php-settings-container PMD ruleset"
-		 xmlns="http://pmd.sf.net/ruleset/1.0.0"
-		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-		 xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 http://pmd.sf.net/ruleset_xml_schema.xsd"
-		 xsi:noNamespaceSchemaLocation="http://pmd.sf.net/ruleset_xml_schema.xsd">
-	<description>codemasher/php-settings-container PMD ruleset</description>
-	<exclude-pattern>*/examples/*</exclude-pattern>
-	<exclude-pattern>*/tests/*</exclude-pattern>
-	<exclude-pattern>*/vendor/*</exclude-pattern>
-	<rule ref="rulesets/cleancode.xml">
-		<exclude name="BooleanArgumentFlag"/>
-	</rule>
-	<rule ref="rulesets/codesize.xml/CyclomaticComplexity">
-		<priority>1</priority>
-		<properties>
-			<property name="maximum" value="150" />
-		</properties>
-	</rule>
-	<rule ref="rulesets/controversial.xml">
-		<exclude name="CamelCaseMethodName"/>
-		<exclude name="CamelCasePropertyName"/>
-		<exclude name="CamelCaseParameterName"/>
-		<exclude name="CamelCaseVariableName"/>
-	</rule>
-	<rule ref="rulesets/design.xml">
-	</rule>
-	<rule ref="rulesets/naming.xml">
-		<exclude name="LongVariable"/>
-		<exclude name="ShortVariable"/>
-	</rule>
-	<rule ref="rulesets/unusedcode.xml">
-		<exclude name="UnusedFormalParameter"/>
-	</rule>
-</ruleset>
diff --git a/vendor/chillerlan/php-settings-container/phpunit.xml b/vendor/chillerlan/php-settings-container/phpunit.xml
index bb05d1289..9271a1bb1 100644
--- a/vendor/chillerlan/php-settings-container/phpunit.xml
+++ b/vendor/chillerlan/php-settings-container/phpunit.xml
@@ -1,22 +1,26 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<phpunit backupGlobals="false"
-         backupStaticAttributes="false"
-         bootstrap="vendor/autoload.php"
-         colors="true"
-         convertErrorsToExceptions="true"
-         convertNoticesToExceptions="true"
-         convertWarningsToExceptions="true"
-         processIsolation="false"
-         stopOnFailure="false"
+<?xml version="1.0"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.5/phpunit.xsd"
+		 bootstrap="vendor/autoload.php"
+		 cacheResultFile=".build/phpunit.result.cache"
+		 colors="true"
+		 verbose="true"
 >
-    <filter>
-        <whitelist processUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">./src</directory>
-        </whitelist>
-    </filter>
-    <testsuites>
-        <testsuite name="php-settings-container test suite">
-            <directory suffix=".php">./tests/</directory>
-        </testsuite>
-    </testsuites>
+	<coverage processUncoveredFiles="true">
+		<include>
+			<directory suffix=".php">./src</directory>
+		</include>
+		<report>
+			<clover outputFile=".build/coverage/clover.xml"/>
+			<xml outputDirectory=".build/coverage/coverage-xml"/>
+		</report>
+	</coverage>
+	<testsuites>
+		<testsuite name="php-settings-container test suite">
+			<directory suffix=".php">./tests/</directory>
+		</testsuite>
+	</testsuites>
+	<logging>
+		<junit outputFile=".build/logs/junit.xml"/>
+	</logging>
 </phpunit>
diff --git a/vendor/chillerlan/php-settings-container/src/SettingsContainerAbstract.php b/vendor/chillerlan/php-settings-container/src/SettingsContainerAbstract.php
index 1ccc1a0e2..f643f73d0 100644
--- a/vendor/chillerlan/php-settings-container/src/SettingsContainerAbstract.php
+++ b/vendor/chillerlan/php-settings-container/src/SettingsContainerAbstract.php
@@ -2,9 +2,7 @@
 /**
  * Class SettingsContainerAbstract
  *
- * @filesource   SettingsContainerAbstract.php
  * @created      28.08.2018
- * @package      chillerlan\Settings
  * @author       Smiley <[email protected]>
  * @copyright    2018 Smiley
  * @license      MIT
@@ -12,16 +10,15 @@
 
 namespace chillerlan\Settings;
 
-use Exception, ReflectionClass, ReflectionProperty;
+use ReflectionClass, ReflectionProperty;
 
-use function call_user_func, call_user_func_array, get_object_vars, json_decode, json_encode, method_exists, property_exists;
+use function get_object_vars, json_decode, json_encode, method_exists, property_exists;
+use const JSON_THROW_ON_ERROR;
 
 abstract class SettingsContainerAbstract implements SettingsContainerInterface{
 
 	/**
 	 * SettingsContainerAbstract constructor.
-	 *
-	 * @param iterable|null $properties
 	 */
 	public function __construct(iterable $properties = null){
 
@@ -35,8 +32,6 @@ abstract class SettingsContainerAbstract implements SettingsContainerInterface{
 	/**
 	 * calls a method with trait name as replacement constructor for each used trait
 	 * (remember pre-php5 classname constructors? yeah, basically this.)
-	 *
-	 * @return void
 	 */
 	protected function construct():void{
 		$traits = (new ReflectionClass($this))->getTraits();
@@ -45,7 +40,7 @@ abstract class SettingsContainerAbstract implements SettingsContainerInterface{
 			$method = $trait->getShortName();
 
 			if(method_exists($this, $method)){
-				call_user_func([$this, $method]);
+				$this->{$method}();
 			}
 		}
 
@@ -56,16 +51,17 @@ abstract class SettingsContainerAbstract implements SettingsContainerInterface{
 	 */
 	public function __get(string $property){
 
-		if(property_exists($this, $property) && !$this->isPrivate($property)){
+		if(!property_exists($this, $property) || $this->isPrivate($property)){
+			return null;
+		}
 
-			if(method_exists($this, 'get_'.$property)){
-				return call_user_func([$this, 'get_'.$property]);
-			}
+		$method = 'get_'.$property;
 
-			return $this->{$property};
+		if(method_exists($this, $method)){
+			return $this->{$method}();
 		}
 
-		return null;
+		return $this->{$property};
 	}
 
 	/**
@@ -77,8 +73,10 @@ abstract class SettingsContainerAbstract implements SettingsContainerInterface{
 			return;
 		}
 
-		if(method_exists($this, 'set_'.$property)){
-			call_user_func_array([$this, 'set_'.$property], [$value]);
+		$method = 'set_'.$property;
+
+		if(method_exists($this, $method)){
+			$this->{$method}($value);
 
 			return;
 		}
@@ -95,10 +93,6 @@ abstract class SettingsContainerAbstract implements SettingsContainerInterface{
 
 	/**
 	 * @internal Checks if a property is private
-	 *
-	 * @param string $property
-	 *
-	 * @return bool
 	 */
 	protected function isPrivate(string $property):bool{
 		return (new ReflectionProperty($this, $property))->isPrivate();
@@ -152,12 +146,7 @@ abstract class SettingsContainerAbstract implements SettingsContainerInterface{
 	 * @inheritdoc
 	 */
 	public function fromJSON(string $json):SettingsContainerInterface{
-
-		$data = json_decode($json, true); // as of PHP 7.3: JSON_THROW_ON_ERROR
-
-		if($data === false || $data === null){
-			throw new Exception('error while decoding JSON');
-		}
+		$data = json_decode($json, true, 512, JSON_THROW_ON_ERROR);
 
 		return $this->fromIterable($data);
 	}
@@ -165,7 +154,7 @@ abstract class SettingsContainerAbstract implements SettingsContainerInterface{
 	/**
 	 * @inheritdoc
 	 */
-	public function jsonSerialize(){
+	public function jsonSerialize():array{
 		return $this->toArray();
 	}
 
diff --git a/vendor/chillerlan/php-settings-container/src/SettingsContainerInterface.php b/vendor/chillerlan/php-settings-container/src/SettingsContainerInterface.php
index 59cef6232..ddacccd29 100644
--- a/vendor/chillerlan/php-settings-container/src/SettingsContainerInterface.php
+++ b/vendor/chillerlan/php-settings-container/src/SettingsContainerInterface.php
@@ -2,9 +2,7 @@
 /**
  * Interface SettingsContainerInterface
  *
- * @filesource   SettingsContainerInterface.php
  * @created      28.08.2018
- * @package      chillerlan\Settings
  * @author       Smiley <[email protected]>
  * @copyright    2018 Smiley
  * @license      MIT
@@ -22,9 +20,7 @@ interface SettingsContainerInterface extends JsonSerializable{
 	/**
 	 * Retrieve the value of $property
 	 *
-	 * @param string $property
-	 *
-	 * @return mixed
+	 * @return mixed|null
 	 */
 	public function __get(string $property);
 
@@ -33,69 +29,43 @@ interface SettingsContainerInterface extends JsonSerializable{
 	 *
 	 * @param string $property
 	 * @param mixed  $value
-	 *
-	 * @return void
 	 */
 	public function __set(string $property, $value):void;
 
 	/**
 	 * Checks if $property is set (aka. not null), excluding private properties
-	 *
-	 * @param string $property
-	 *
-	 * @return bool
 	 */
 	public function __isset(string $property):bool;
 
 	/**
 	 * Unsets $property while avoiding private and non-existing properties
-	 *
-	 * @param string $property
-	 *
-	 * @return void
 	 */
 	public function __unset(string $property):void;
 
 	/**
 	 * @see SettingsContainerInterface::toJSON()
-	 *
-	 * @return string
 	 */
 	public function __toString():string;
 
 	/**
 	 * Returns an array representation of the settings object
-	 *
-	 * @return array
 	 */
 	public function toArray():array;
 
 	/**
 	 * Sets properties from a given iterable
-	 *
-	 * @param iterable $properties
-	 *
-	 * @return \chillerlan\Settings\SettingsContainerInterface
 	 */
 	public function fromIterable(iterable $properties):SettingsContainerInterface;
 
 	/**
 	 * Returns a JSON representation of the settings object
 	 * @see \json_encode()
-	 *
-	 * @param int|null $jsonOptions
-	 *
-	 * @return string
 	 */
 	public function toJSON(int $jsonOptions = null):string;
 
 	/**
 	 * Sets properties from a given JSON string
 	 *
-	 * @param string $json
-	 *
-	 * @return \chillerlan\Settings\SettingsContainerInterface
-	 *
 	 * @throws \Exception
 	 * @throws \JsonException
 	 */
diff --git a/vendor/chillerlan/php-settings-container/tests/ContainerTest.php b/vendor/chillerlan/php-settings-container/tests/ContainerTest.php
index ddae538f3..8fca7c3e8 100644
--- a/vendor/chillerlan/php-settings-container/tests/ContainerTest.php
+++ b/vendor/chillerlan/php-settings-container/tests/ContainerTest.php
@@ -2,9 +2,7 @@
 /**
  * Class ContainerTraitTest
  *
- * @filesource   ContainerTraitTest.php
  * @created      28.08.2018
- * @package      chillerlan\SettingsTest
  * @author       Smiley <[email protected]>
  * @copyright    2018 Smiley
  * @license      MIT
@@ -13,74 +11,86 @@
 namespace chillerlan\SettingsTest;
 
 use PHPUnit\Framework\TestCase;
-use Exception, TypeError;
+use JsonException, TypeError;
+use function sha1;
 
-class ContainerTraitTest extends TestCase{
+class ContainerTest extends TestCase{
 
 	public function testConstruct(){
 		$container = new TestContainer([
 			'test1' => 'test1',
-			'test2' => 'test2',
+			'test2' => true,
 			'test3' => 'test3',
 			'test4' => 'test4',
 		]);
 
-		$this->assertSame('test1', $container->test1);
-		$this->assertSame('test2', $container->test2);
-		$this->assertNull($container->test3);
-		$this->assertSame('test4', $container->test4);
+		$this::assertSame('test1', $container->test1);
+		$this::assertSame(true, $container->test2);
+		$this::assertNull($container->test3);
+		$this::assertSame('test4', $container->test4);
 
-		$this->assertSame('success', $container->testConstruct);
+		$this::assertSame('success', $container->testConstruct);
 	}
 
 	public function testGet(){
 		$container = new TestContainer;
 
-		$this->assertSame('foo', $container->test1);
-		$this->assertNull($container->test2);
-		$this->assertNull($container->test3);
-		$this->assertNull($container->test4);
-		$this->assertNull($container->foo);
+		$this::assertSame('foo', $container->test1);
+		$this::assertNull($container->test2);
+		$this::assertNull($container->test3);
+		$this::assertNull($container->test4);
+		$this::assertNull($container->foo);
 
 		// isset test
-		$this->assertTrue(isset($container->test1));
-		$this->assertFalse(isset($container->test2));
-		$this->assertFalse(isset($container->test3));
-		$this->assertFalse(isset($container->test4));
-		$this->assertFalse(isset($container->foo));
+		$this::assertTrue(isset($container->test1));
+		$this::assertFalse(isset($container->test2));
+		$this::assertFalse(isset($container->test3));
+		$this::assertFalse(isset($container->test4));
+		$this::assertFalse(isset($container->foo));
 
 		// custom getter
 		$container->test6 = 'foo';
-		$this->assertSame(sha1('foo'), $container->test6);
+		$this::assertSame(sha1('foo'), $container->test6);
 		// nullable/isset test
 		$container->test6 = null;
-		$this->assertFalse(isset($container->test6));
-		$this->assertSame('null', $container->test6);
+		$this::assertFalse(isset($container->test6));
+		$this::assertSame('null', $container->test6);
 	}
 
 	public function testSet(){
 		$container = new TestContainer;
 		$container->test1 = 'bar';
-		$container->test2 = 'what';
+		$container->test2 = false;
 		$container->test3 = 'nope';
 
-		$this->assertSame('bar', $container->test1);
-		$this->assertSame('what', $container->test2);
-		$this->assertNull($container->test3);
+		$this::assertSame('bar', $container->test1);
+		$this::assertSame(false, $container->test2);
+		$this::assertNull($container->test3);
 
 		// unset
 		unset($container->test1);
-		$this->assertFalse(isset($container->test1));
+		$this::assertFalse(isset($container->test1));
 
 		// custom setter
 		$container->test5 = 'bar';
-		$this->assertSame('bar_test5', $container->test5);
+		$this::assertSame('bar_test5', $container->test5);
 	}
 
 	public function testToArray(){
-		$container = new TestContainer(['test1' => 'no', 'test2' => true, 'testConstruct' => 'success']);
+		$container = new TestContainer([
+			'test1'         => 'no',
+			'test2'         => true,
+			'testConstruct' => 'success',
+		]);
 
-		$this->assertSame(['test1' => 'no', 'test2' => true, 'testConstruct' => 'success', 'test4' => null, 'test5' => null, 'test6' => null], $container->toArray());
+		$this::assertSame([
+			'test1'         => 'no',
+			'test2'         => true,
+			'testConstruct' => 'success',
+			'test4'         => null,
+			'test5'         => null,
+			'test6'         => null
+		], $container->toArray());
 	}
 
 	public function testToJSON(){
@@ -88,12 +98,12 @@ class ContainerTraitTest extends TestCase{
 
 		$expected  = '{"test1":"no","test2":true,"testConstruct":"success","test4":null,"test5":null,"test6":null}';
 
-		$this->assertSame($expected, $container->toJSON());
-		$this->assertSame($expected, (string)$container);
+		$this::assertSame($expected, $container->toJSON());
+		$this::assertSame($expected, (string)$container);
 	}
 
 	public function testFromJsonException(){
-		$this->expectException(Exception::class);
+		$this->expectException(JsonException::class);
 		(new TestContainer)->fromJSON('-');
 
 	}
diff --git a/vendor/chillerlan/php-settings-container/tests/TestContainer.php b/vendor/chillerlan/php-settings-container/tests/TestContainer.php
index a35f75277..a83f4bef3 100644
--- a/vendor/chillerlan/php-settings-container/tests/TestContainer.php
+++ b/vendor/chillerlan/php-settings-container/tests/TestContainer.php
@@ -2,9 +2,7 @@
 /**
  * Class TestContainer
  *
- * @filesource   TestContainer.php
  * @created      28.08.2018
- * @package      chillerlan\SettingsTest
  * @author       Smiley <[email protected]>
  * @copyright    2018 Smiley
  * @license      MIT
@@ -25,5 +23,5 @@ use chillerlan\Settings\SettingsContainerAbstract;
 class TestContainer extends SettingsContainerAbstract{
 	use TestOptionsTrait;
 
-	private $test3 = 'what';
+	private string $test3 = 'what';
 }
diff --git a/vendor/chillerlan/php-settings-container/tests/TestOptionsTrait.php b/vendor/chillerlan/php-settings-container/tests/TestOptionsTrait.php
index 261f533ac..c8c628b5b 100644
--- a/vendor/chillerlan/php-settings-container/tests/TestOptionsTrait.php
+++ b/vendor/chillerlan/php-settings-container/tests/TestOptionsTrait.php
@@ -2,9 +2,7 @@
 /**
  * Trait TestOptionsTrait
  *
- * @filesource   TestOptionsTrait.php
  * @created      28.08.2018
- * @package      chillerlan\SettingsTest
  * @author       smiley <[email protected]>
  * @copyright    2018 smiley
  * @license      MIT
@@ -12,29 +10,31 @@
 
 namespace chillerlan\SettingsTest;
 
+use function sha1;
+
 trait TestOptionsTrait{
 
-	protected $test1 = 'foo';
+	protected string $test1 = 'foo';
 
-	protected $test2;
+	protected ?bool $test2 = null;
 
-	protected $testConstruct;
+	protected string $testConstruct;
 
-	protected $test4;
+	protected ?string $test4 = null;
 
-	protected $test5;
+	protected ?string $test5 = null;
 
-	protected $test6;
+	protected ?string $test6 = null;
 
-	protected function TestOptionsTrait(){
+	protected function TestOptionsTrait():void{
 		$this->testConstruct = 'success';
 	}
 
-	protected function set_test5($value){
+	protected function set_test5($value):void{
 		$this->test5 = $value.'_test5';
 	}
 
-	protected function get_test6(){
+	protected function get_test6():string{
 		return $this->test6 === null
 			? 'null'
 			: sha1($this->test6);