Issue #2719695 by alexpott, Mile23: Fix 'Drupal.Classes.ClassDeclaration.CloseBraceAfterBody' coding standard

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files

Issue #1167248 by Berdir, damiankloip, Alan Evans, beejeebus, catch: Add CacheBackendInterface::setMultiple().

Issue #2158003 by Wim Leers, msonnabaum, effulgentsia, moshe weitzman: Remove Block Cache API in favor of blocks returning #cache with cache tags.

Issue #2198343 by damiankloip, longwave: Convert all usages of cache() and cache_invalidate_tags() procedural functions.

Issue #2169447 by damiankloip, sun, longwave: DX: Supply CacheBackendInterface::CACHE_PERMANENT as Cache::PERMANENT.

Issue #2100121 by StephaneQ | Berdir: Documentation about changing cache backend in CacheBackendInterface is outdated.

Issue #2100329 by cosmicdreams: Use \Drupal instead of Drupal to make IDEs and static code analyse tools happy.

Issue #1167144 by chx, catch, claudiu.cristea: Make cache backends responsible for their own storage.

Issue #1808112 by sun: Fixed Missing method visibility, bogus phpDoc and coding style in Cache backend classes.

Issue #1393392 by c960657, fubhy: Convert prefix cache clears to cache tags, then remove support for them.

- Patch #730060 by beejeebus, catch, Damien Tournoud, moshe weitzman, msonnabaum, oriol_e9g, aspilicious: Fixed Replace CACHE_TEMPORARY, cache_clear_all() (no arguments) and minimum cache lifetime with cache tags support.

Issue #636454 by catch, carlos8f, msonnabaum, beejeebus, Berdir, moshe weitzman, pillarsdotnet: Added Cache tag support.

Issue #1323120 by webchick, David_Rothstein, kotnik, amateescu: Documentation follow-ups for convert cache system to PSR-0.