Issue #2958407 by alexpott: Properly deprecate SafeMarkup::isSafe, SafeMarkup::checkPlain and the SafeMarkup class

Issue #2884675 by rodrigoaguilera, joelpittet, TR: Remove twig uses of Twig_Node::getLine to Twig_Node::getTemplateLine

Issue #2901726 by mfernea, gmario, finn.lewis, robertoperuzzo, rachel_norfolk: Fix 'Squiz.Functions.MultiLineFunctionDeclaration' coding standard

Issue #2854529 by alexpott, xjm, klausi, Chi, Mixologic: Fix Drupal.Scope.MethodScope - all methods should have scopes

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 #2847611 by dawehner, webflo: \Drupal\Core\Template\TwigExtension::getLink overrides existing classes

Issue #2606772 by mikeker, pwolanin, YesCT, david_garcia, alexpott, cilefen, xjm, Cottser, catch, joelpittet, effulgentsia, kevla, dawehner: Long Twig cache directories can cause failures on some filesystems

Issue #2569119 by pwolanin, marvin_B8, jhedstrom, csheltonlcm, alexpott, dawehner, Fabianx, catch:  Use Crypt::hashBase64(), not hash('crc32b') or sha1 for placeholder tokens

Issue #2571633 by lauriii, tuutti, joelpittet: Remove TwigExtension setter methods - use constructor instead

Issue #2616756 by Charlotte17, joelpittet, lauriii, heddn, ytl, T'Bell Hernandez, Cottser, vaplas, alexpott: Allow instantiating Attribute objects within Twig

Issue #2783393 by Mile23: Fix 'Drupal.Commenting.FunctionComment.IncorrectParamVarName' coding standard

Issue #2698141 by TravisCarden, ChuChuNaKu, effulgentsia: Empty Twig {% trans %} tag causes unhelpful fatal exception

Issue #2575519 by Wim Leers, dawehner, alexpott: Twig template variables containing result of Drupal::url() and Drupal:l:() don't bubble up their cacheability and attachment metadata (e.g. token placeholder)

Issue #2716661 by anoopjohn: Fix 'Drupal.Commenting.FunctionComment' coding standard - Issues related to @see references

Issue #2572307 by vprocessor, attiks, andriyun, alexpott, pfrenssen: Fix 'Generic.PHP.UpperCaseConstant' coding standard

Issue #2706669 by alexpott, tstoeckler: Fix Drupal.Functions.FunctionDeclaration.* coding standards in core

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

Issue #2700367 by alexpott: Consolidate miscellaneous docs from class @file docblocks into the class docblocks (part2)

Issue #2676816 by xjm: Consolidate miscellaneous docs from class @file docblocks into the class docblocks

Issue #2501735 by snehi, lokapujya, malavya, priya.chat, sdstyles, ChuChuNaKu, er.manojsharma, mglaman, joelpittet: Add throws to Twig extension comments

Issue #2672442 by rakesh.gectcr, dimaro, aditya_anurag, jhodgdon: In the documentation, change all instances of "an URL" to "a URL"

Issue #2579691 by lauriii, alexpott, stefan.r, YesCT, dawehner: Remove usages of SafeMarkup::isSafe()

Issue #2649892 by alexpott, mikey_p: Should typehint against DateFormatterInterface and not DateFormatter

Issue #1494670 by Liam Morland, jhedstrom, Wim Leers, mfb: References to CSS, JS, and similar files should be root-relative URLs: avoids mixed content warnings & fewer bytes to send

Issue #2571845 by drupal.ninja03, hussainweb, anil280988, snehi, jhodgdon, GoZ, stefan.r: Links to wikipedia/php.net should be part of the actual t() string so they can be localized

Issue #2623708 by lauriii, aspilicious, joelpittet: Whitelist instances instead of specific classes in Twig sandbox policy

(cherry picked from commit e0516e39)

Issue #2572695 by marvin_B8, attiks, pfrenssen, xjm: Fix 'Drupal.ControlStructures.ElseIf' coding standard

Issue #2608072 by ameymudras: "Object of type "@class" cannot be printed." exception message should not be translated

Issue #2605420 by IRuslan, joelpittet: Missing aria-pressed template_preprocess_details() due to lost copied attributes in Attribute

Issue #2194155 by cosmicdreams, subhojit777, tatarbj, Cottser: Replace deprecated Twig_NodeInterface with recommended Twig_Node

Issue #2600152 by Cottser, dawehner: Make ThemeRegistryLoader only throw an error when $throw is true

Issue #2540870 by joelpittet, lauriii: Improve the |safe_join Twig to be inline with twig_join_filter()

Issue #2513266 by mikeker, joelpittet, lauriii, Cottser, pwolanin, larowlan, Fabianx, stevector, catch, alexpott, dawehner: Twig templates can call delete() on entities and other objects