[task/composer-compatibility] Minor changes that will break extension BC

PHPBB3-11840
[ticket/11840] Fix regex

PHPBB3-11840
[ticket/11840] Use generic information in the test extension

Not sure why I had my name/info in these files...

PHPBB3-11840
[ticket/11840] Correct Moo test extension composer

PHPBB3-11840
[ticket/11883] Report completed data step in migration as "Installing Data"

PHPBB3-11883
[ticket/11883] Only output the migration time, not total

PHPBB3-11883
Merge remote-tracking branch 'EXreaction/ticket/11883' into develop

# By Nathan (1) and Nathan Guse (1)
# Via Nathan Guse
* EXreaction/ticket/11883:
  [ticket/11883] Only output the migration time, not total
  [ticket/11883] Report completed data step in migration as "Installing Data"
Merge pull request #1742 from EXreaction/ticket/11840

Ticket/11840 Refactor the extension metadata class
[ticket/11885] Add migration files for 3.0.12-RC2 and RC3 and 3.0.12

PHPBB3-11885
[ticket/11885] Fix migration files for 3.0.12

PHPBB3-11885
[ticket/11885] Use conditional in update_data()

PHPBB3-11885
Merge pull request #1749 from imkingdavid/ticket/11885

[ticket/11885] Add migration files for 3.0.12-RC2 and RC3 and 3.0.12