Issue #1003788 by stefan.r, Alan D., Josh Waihi, JimmyAx, robhardwick, wiifm, twistor, pwolanin, bzrudi71, bellHead, john_brown: Fixed PostgreSQL: PDOException:Invalid text representation when attempting to load an entity with a string or non-scalar ID.

Issue #2181775 by Ryan Weal, chx | mvc: Fixed SQL idmap broke when using separate mysql users for source and destination.

Isssue #2263047 by joshi.rohit100, amitgoyal: Clean up hook_help example so it complies with hook_help standards

Issue #2285349 by olli: Fixed Fatal error: Call to a member function getType() on a non-object in comment.module on line 951.

Issue #2005434 by alexpott, heddn, andrewmacpherson, swentel: Let 3rd party modules store extra configuration in EntityDisplay.

Issue #2231003 by kay_v, djevans, lokapujya, seiplax | scor: GetPreparedFieldMapping() should return NULL when there are no mappings.

Issue #2284111 by alexpott, Berdir, damiankloip: Fixed Exceptions caught and printed from index.php should not return a 200 status code.

Issue #2278541 by tim.plunkett, kim.pepper, Bojhan, EclipseGc: Refactor block visibility to use condition plugins.

Issue #2039449 by joshi.rohit100, joachim, lokapujya, Jalandhar, paulh, yaworsk: Fix docs for assertField methods in WebTestBase to describe how to skip value checking

Issue #2279617 by thedavidmeister, mgifford: Fixed _filter_url_trim() should use Unicode::truncate().

Issue #2216557 by jhodgdon, mongolito404, Berdir: Fill in @defgroup/topic docs for Testing overview.

Issue #2270815 by vijaycs85, Gábor Hojtsy, nvinayvinay: Make schema testing code available as generic API.

Issue #2246661 by ivanjaros: Some templates are missing 'Default theme implementation ..' statement.

Issue #2256679 by alexpott, tim.plunkett: Fixed Use config schema to determine which config entity properties to export regardless of whether they are public or protected.

Issue #2247779 by Wim Leers, larowlan, dawehner: Allow #pre_render, #post_render and #post_render_cache callbacks to be service methods.

Issue #2275877 by Mixologic, duellj, Les Lim, Xano, David Strauss: Replace master/slave terminology with primary/replica.

Issue #1914914 by purdy_nc, meba, chx, heyrocker: Add to docs of file_scan_directory to discuss excluding config

Issue #2281419 by t0xicCode, joshi.rohit100, SiliconMind: Fix up docs for FieldItemInterface methods

Issue #2260043 by t0xicCode, amitgoyal: Remove lingering references to obsolete field crud and attach topics and functions

Issue #2243439 by amitgoyal, jonreid, mark.labrecque, mpv, pwolanin, scor, cilefen, sun: Fix up docs about config file/database locations in settings.php and READMEs in directories