Add Composer 2 support (#25)

Co-authored-by: Daniel Johnson <djohnson@webfirst.com>

version 4 (#24)

Add custom installer for drupal-console-library type (#22)

Update Symfony dependency constraint (#16)

[console] Remove site cache file. (#15)

Dump service when usgin drupal.generator as tag. (#14)

[console] Validate directory and add catch message. (#13)

[console] Update getSubscribedEvents. (#10)

Fix include path in Extender.php (#8)

#4: Don't error on unreadable directories (#5)