Issue #1798732 by sun, Dean Reilly, mbrett5062, chx, westie, alexpott, juanolalla, Mark Carver, catch, jthorson, cam8001, Berdir: Convert install_task(), install_time() and install_current_batch() to use the state system.

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

Issue #1587270 by klausi: Added comment in .htaccess describing how to forbid execution of PHP files in subfolders.

Issue #2025883 by iamEAP, Mile23, msonnabaum, Berdir: Fixed Drupal's PHPUnit bootstrap.php does not register module namespaces out of /core.

Issue #1872598 by LewisNyman, rachel_norfolk, echoz, djbobbydrake: Fixed Bartik color settings not responsive.

Issue #2086201 by tim.plunkett, pwolanin: Fixed Use PluginFormInterface instead of one-off form methods for search plugins.

Issue #1387964 by yoroy, themic8, realityloop, galooph: Fixed People miss the first section of the help overview page.

Issue #2102539 by andypost: Fixed Current user service should be updated in drupalLogin() and drupalLogout().

Issue #2049167 by jbrown: Fixed Don't use function_exists() on functions that are built into PHP 5.3.

Issue #1901390 by chx, sun: Enable StaticReflectionParser performance optimization to speed up Annotation parsing.

Issue #2040269 by Tim Bozeman, RunePhilosof, typhonius, Cottser: Remove drupal_add_css() from bartik.theme.

Issue #2103231 by Mark Carver: Add Mark Carver to the list of theme system maintainers in MAINTAINERS.txt.

Issue #1106160 by tim.plunkett, BarisW: Fixed Color module uses the public file system but doesn't check if it is set.

Issue #2095641 by m1r1k: Use current_user() service instead of _account attribute to get user object.

Issue #2006282 by joelpittet: Refactor Attribute classes - Cleanup, Security, and Readability and minor performance.

Issue #2096855 by zero2one: Fixed FilterHtmlImageSecure does not support images with spaces in the filename.

Issue #2076847 by zero2one, larowlan, Wim Leers, socketwench, mr.baileys: Fixed FilterHtmlImageSecure incorrectly flags images coming from site URLs with ports in them as insecure.

Issue #2067119 by pameeela, longwave, tstoeckler, Wim Leers: Fixed 'width' and 'height' HTML placeholder attributes in image dialog are not translated, yet should be lcfirst.

Issue #1824848 by spearhead93, catch, mtift: Remove drupal_js_version_string() variable (instead of converting it).