Merge branch 'master' into php-7.4

# Conflicts:
#	.github/workflows/tests.yml
#	src/Data/Kanji.php
#	src/Data/QRDataAbstract.php
#	src/Data/QRDataInterface.php
#	src/Output/QRImage.php
#	src/Output/QRImagick.php
#	src/Output/QRMarkup.php
#	src/Output/QROutputAbstract.php
#	src/Output/QROutputInterface.php
#	src/Output/QRString.php
#	src/QRCode.php
#	src/QROptionsTrait.php

src/Data/QRDataInterface.php

@@ -166,12 +166,12 @@ interface QRDataInterface{
 	];
 
 	/**
-	 *
+	 * Sets the data string (internally called by the constructor)
 	 */
 	public function setData(string $data):QRDataInterface;
 
 	/**
-	 *
+	 * returns a fresh matrix object with the data written for the given $maskPattern
 	 */
 	public function initMatrix(int $maskPattern, bool $test = null):QRMatrix;