4.0.0

• PHP 7.4 (typed properties etc.)
  • removed superfluous @param and @return tags from docblocks
  • massive docblock overhaul/cleanup in preparation for phpDocumentor v3
  • automatic phpdoc generation & deploy on push to master
  • static analysis via Phan
• a whole bunch of changes and fixes, most notably:
  • QROptions::$imageTransparencyBG expects now array input only (int[]) and cuts off exceeding items
  • added QRMatrix::init() to quickly initialize a matrix object for the given version
  • QRMatrix::getMask() bugfix (x and y swapped for mask pattern 0b001 and 0b010) and fixed the corresponding test
  • renamed constants QRDataInterface::*_CHAR_MAP to CHAR_MAP_*
  • added proper getters for BitBuffer - no more public properties!
  • test overhaul
    • reduced complexity
    • proper static calls to \PHPUnit\Framework\TestCase::assert*
    • added return types everywhere
    • more use of data providers
• composer dependencies
  • removed requirement for ext-gd (markup output can be run without GD or Imagick)
  • updated PhpUnit to v9.1
  • added Phan