Issue #1987712 by dawehner, claudiu.cristea, damiankloip, andypost: Convert file_download() to a new style controller.

Issue #2011084 by jiff | DmitryDrozdik: Replace drupal_container() with Drupal::service() in the file module.

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

Issue #625958 followup by slashrsm, chx, andypost, yched: [Follow up] Support Uploading Multiple Files for HTML5 Browsers via #multiple attribute.

Issue #1792032 by balsama, bjorpe | lxs: Fixed File validation error message not removed after subsequent upload of valid file.

Issue #1468210 followup by David_Rothstein: Fixed Remove special ->uid == 1 check in file_validate_size().

Issue #1827448 by RobLoach, sun, jbrown, tstoeckler: Use __DIR__ instead of DRUPAL_ROOT where possible/sensible.

Issue #625958 by slashrsm, quicksketch, eojthebrave, droplet, danlinn, czigor: Support Uploading Multiple Files for HTML5 Browsers via #multiple attribute.

Issue #1292374 by jbrown, chris.leversuch, slashrsm, karschsp, Kevin Morse, Berdir: Fixed Enable static caching for File entities.

Issue #1822458 by tim.plunkett, effulgentsia: Move dynamic parts (view modes, bundles) out of entity_info().

Issue #1875632 follow-up by nod_, Wim Leers, effulgentsia: Added wrapper function for JS settings merging behavior, fix tabledrag.

Issue #1356170 by ohnobinki, tim.plunkett: Remove all uses of array_merge_recursive(), or document why they are being used instead of NestedArray::mergeDeep().

Issue #1874300 by Berdir, swentel: Remove $entity_type argument from field.module functions that receive a single $entity.

Issue #1229014 by bfroehle, jackbravo: Content-Disposition header makes private files show open/save prompts, but public files show inline.

Issue #1705920 by tim.plunkett, sun, underq, javier.alejandr...: Convert all calls to procedural drupal_array_()*() functions to Drupal\Component\Utility\NestedArray.

Issue #1831808 by marcingy: move remaining file managed queries into field database entity storage controller.

Issue #1763974 by tim.plunkett, EclipseGC, berdir, xjm, neclimdul, FabianX: Convert entity type info into plugins.

Issue #1468210 by marthinal, Eric_A, quicksketch: remove special ->uid == 1 check in filefield_validate_size().

Issue #1468210 by marthinal, quicksketch: remove special ->uid == 1 check in filefield_validate_size().

Issue #1773032 by Jorrit, quicksketch: Fixed Non-standard and pointless name attribute added to Content-Type header.

Revert "Issue #1586356 by dww, amateescu: Fixed Missing 'weight' support from hook_field_widget_info() makes it impossible to sanely order widgets."

This reverts commit 2ffe4abd. Totally, totally wrong commit message.

Issue #1586356 by dww, amateescu: Fixed Missing 'weight' support from hook_field_widget_info() makes it impossible to sanely order widgets.

Issue #1700382 by Albert Volkman, cam8001: Replace remaining references to drupal_attributes() with new Attributes().