Issue #2481349 by mfb, dagmar, jofitz, smustgrave, vasi, neclimdul, ziomizar, quietone, _utsavsharma, littlepixiez, xjm, fgm, Todd Zebert, hass, dawehner, heddn, webchick, catch: Prevent the use of placeholders that cannot be converted into strings when creating logs

Issue #3328454 by xjm, Bhanu951, jidrone, smustgrave: Replace most strpos() !== FALSE or === FALSE with str_contains()

Issue #2617330 by dagmar, mfb, pradhumanjainOSL, Ratan Priya, fgm, alexpott, dawehner: LogMessageParser::parseMessagePlaceholders() needs to switch bang placeholder to colon placeholder

Issue #2909805 by googletorp, fgm, dagmar, ankithashetty: LogMessageParser breaks messages containing braces

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

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

Issue #2457887 by prateekMehta, stefan.r, rpayanm, alexpott: Use Utility\SafeMarkup class instead of Utility\String for placeholder(), checkPlain(),format() functions

Issue #1289536 by ParisLiakos, RobLoach, Crell, larowlan, fgm, pounard, Pancho, dawehner, scor, tim.plunkett, alexpott, socketwench: Switch Watchdog to a PSR-3 logging framework.

Revert "Issue #1289536 by RobLoach, Crell, Pancho, pounard, socketwench, fgm, dawehner, scor, tim.plunkett, larowlan, ParisLiakos: Switch Watchdog to a PSR-3 logging framework."

This reverts commit ef250ba2.

Issue #1289536 by RobLoach, Crell, Pancho, pounard, socketwench, fgm, dawehner, scor, tim.plunkett, larowlan, ParisLiakos: Switch Watchdog to a PSR-3 logging framework.