Issue #2557871 by alexpott: Remove all usages SafeMarkup::checkPlain() from template preprocess functions and attributes

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

Issue #1938910 by JeroenT, Temoor, gnuget, pratik60, dsnopek, Brandonian | duellj: Convert image theme tables to table #type.

Issue #1825952 by Fabianx, joelpittet, bdragon, heddn, chx, xjm, pwolanin, mikey_p, ti2m, bfr, dags, cilefen, scor, mgifford: Turn on twig autoescape by default

Issue #1898420 by mondrake, joelpittet, InternetDevels, claudiu.cristea, c4rl, DamienMcKenna, Albert Volkman, shanethehat, thedavidmeister: Image.module - Convert theme_ functions to Twig.

Issue #2171071 by jessebeach, dawehner, chakrapani, longwave, Gábor Hojtsy, xjm, Wim Leers: Rename drupal_add_library() to _drupal_add_library() and remove its uses.

Issue #2196897 by divesh.kumar: Convert all calls & docs references to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in image module.

Issue #2171737 by vijaycs85, Wim Leers, claudiu.cristea: Regression: Draggable table broken on image style form.

Issue #732022 by vijaycs85, Wim Leers, dawehner, nod_, kscheirer: Drupal_add_tabledrag() still using drupal_add_(js|library)(), should return array for #attached.

Issue #2009580 by pplantinga, Samvel, hussainweb, andypost, siccababes: Replace theme() with drupal_render() in image module.

Issue #1788542 by claudiu.cristea, andypost, tim-e, fubhy, speely, heyrocker: Use EntityFormController and EntityListController for image styles.

Issue #2010122 by jeroen12345, helga.chb, heddn: Replace theme() with drupal_render() in image module for theme_image_crop_summary().

Issue #1668866 by ParisLiakos, aspilicious, tim.plunkett, pdrake, g.oechsler, dawehner, Berdir, corvus_ch, damiankloip, disasm, marcingy, neclimdul: Replace drupal_goto() with RedirectResponse.

Issue #1987066 by Kevin Morse, JohnAlbin, rteijeiro, echoz, ry5n: Rename files to match CSS file naming convention.

Issue #1946416 by kim.pepper: Convert all of confirm_form() in image.admin.inc to the new form interface.

Issue #1411276 by swentel, anrikun, quicksketch: Fixed image.admin.inc: new effect options are double escaped (check_plain()).

Issue #1782244 follow-up by sun, znerol: Fixed Convert image styles  array into ImageStyle (extends ConfigEntity).

Issue #1782244 by heyrocker, andypost, tstoeckler: Convert image styles  array into ImageStyle (extends ConfigEntity).

Issue #1480854 by tim.plunkett, Noyz, Bojhan, yoroy, kika: Convert operation links to '#type' => 'operations'.

Issue #606598 by andypost, stBorchert, sun, aspilicious, joachim: Added Human readable image-style names.

Issue #1508872 by attiks, disasm, Alan Evans, Jelle_S, marcingy, sun: Fixed Image effects duplicate on edit.

- Patch #1614292 by brockjo: fixed image_style_delete_form() doesn't take form_state() by reference.

Issue #1540174 by Niklas Fiekas, attiks: Fixed Some attributes not allowed for the new HTML5 input elements.

- Patch #1497088 by acrollet: Fixed Empty configuration values should return an empty string instead of an empty array.

Issue #1398740 by TravisCarden: Fixed Typo in status message: 'The %style has been revert to its defaults.'