4.0.2: Merge remote-tracking branch 'origin/master'

# Conflicts:
#	QrEncode/Exception/QrEncoderException.php
#	QrRender/Exception/IoException.php
#	QrRender/QrCodeRendererPng.php
#	QrRender/QrCodeRendererTiff.php
#	README.md
#	composer.json
#	src/QrEncode/QrCode/QrCode.php
#	src/QrEncode/QrCode/QrCodePoint.php
#	src/QrEncode/QrCode/QrCodePointRow.php
#	src/QrEncode/QrEncoder.php
#	src/QrRender/Base/QrCodeRendererInterface.php
#	src/QrRender/PathFinder/Path.php
#	src/QrRender/PathFinder/PathPoint.php
#	src/QrRender/PathFinder/QrCodePathFinder.php
#	src/QrRender/QrCodeRendererEps.php