Issue #1012018 by mjonesdinero, yashadev, amateescu, axyjo: Fix copyright dates and make sure all third-party code is included in COPYRIGHT.txt

Issue #1591686 by greg.1.anderson: Add copyright and authors files to Twig directory and COPYRIGHT.txt

Nate Lampton authored 13 years ago and catch committed 13 years ago

Issue #22336 by quicksketch, scor, boombatower, and rfay. Move all core Drupal files under a core subdirectory.

- Patch #671884 by axyjo, int: setting the date to 2010 in the COPYRIGHT.txt file. Welcome to the new year, Drupal.

- Patch #174226 by keith.smith, pwolanin et al al -- and greatly simplified by me: added a copyright notice.