Issue #2361757 by rpayanm: Remove usage of mime_header_encode().
Issue #2361711 by rpayanm: Remove usage of drupal_convert_to_utf8().
Issue #1948418 by webflo, martin107, galooph, cilefen, gaurav.goyal, amitgoyal, dawehner, dstol: Fixed Address SA-CONTRIB-2013-035 for views in D8.
Issue #2351589 by ultimike, penyaskito: Fixed Exception when a source has no destId.
Issue #2324371 by lauriii, aneek, chx, joelpittet, webflo, Fabianx, rteijeiro: Fix common HTML escaped render #key values due to Twig autoescape.
Issue #2353699 by jarsenx | ultimike: D6->D8 Migration missing variable: default_nodes_main.
Issue #2353667 by micnap | ultimike: D6->D8 Migration missing variable: forum_nav_vocabulary.
Issue #2363589 by wizonesolutions: Fixed Wrong Contains specification in \Drupal\contact\MessageInterface.