v1.24.0

• tools
  • upgrade pdepend, phpmd, psalm #218
  • refactoring testing different php versions and installing suggested tools #220
  • phpcpd - support extensions configuration #193, #192, enable v6 #206, #209
  • phpstan - fix supporting v0.12 #194, require neon dependency #196, #197
  • security-checker - replace the abandoned Sensiolabs security checker with the Enlightn security checker #216, #215, #214
  • parallel-lint - don't use abandoned parallel-lint packages #207
  • psalm/phpstan - memory-limit for psalm and phpstan #202
• composer
  • fix loading versions installed by composer 2.0 #212, #213
  • allow to define vendor and vendor-bin with environment variables #198
  • enable symfony5 #205, twig3 #203, robo3 #208
• internal
  • migrate from travis to github actions, add php 7.4/8.0 #195, #217, #219, #221
  • build default and updated docker image #222
  • update docs (docker helper, present copyright year) #199, #210, #223