Issue #2074509 by tim.plunkett, falcon03, mgifford, Xano: Fixed Add missing #title property to ensure form accessibility.

Issue #2061973 by InternetDevels, naveenvalecha: Replace user_access() calls with $account->hasPermission() in book module.

Issue #1620010 by dawehner, ParisLiakos, plach, jibran: Move LANGUAGE constants to the Language class.

Issue #1938296 by disasm, YesCT: Convert book_admin_overview() and book_render() to a new-style Controller.

Issue #1818556 by das-peter, plach, fago, Berdir, vijaycs85: Change notice: Convert nodes to the new Entity Field API.

Issue #1925196 by tim.plunkett, joergM, robmc: Convert book's system_config_form() to SystemConfigFormBase.

Issue #1928082 by vijaycs85, YesCT, alexpott: Fixed Make usage of book.settings:allowed_types() consistent.

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

Issue #1723892 by Berdir, Pancho, das-peter, fago: Support for revisions for entity save and delete operations.

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

- Patch #1703164 by chriscalip, kbasarab, no_commit_credit, aspilicious: Fixed Convert book settings to the new configuration system.

Issue #1361234 by duellj, loganfsmyth, aspilicious, cosmicdreams, fago, amateescu, sun: Added Make the node entity a classed object.

Issue #965300 by Gábor Hojtsy, xjm: Change LANGUAGE_NONE to LANGUAGE_NOT_SPECIFIED; add LANGUAGE_NOT_APPLICABLE and LANGUAGE_MULTIPLE.

Issue #1315992 by xjm: Remove path designations from menu callback docs to conform with current 8.x standards

Issue #589440 by Boobaa, JanZ, pwolanin, mlncn, TomiMikola, willmoy, marcp et all: Fixed Reordering fails with more than 31 book pages in a book.

Nate Lampton authored Oct 30, 2011 and catch committed Nov 01, 2011

Issue #22336 by quicksketch, scor, boombatower, and rfay. Move all core Drupal files under a core subdirectory.

Issue #1136130 by pillarsdotnet: Reinstated WATCHDOG_* constants; using PHP equivalents caused issues on Windows.

#589440 by Booba, willmoy, JanZ, pwolanin, mlncn: Fixed Reordering fails with more than 31 book pages in a book

- Patch #882694 by mgifford, sun, ksenzee, bleen18, yched: add missing form element titles for accessibility.

- Patch #756762 by effulgentsia, fago, sun: AJAX should follow same rules for whether to call drupal_rebuild_form() as non-AJAX submissions.

Roll-back of node titles as fields. The Entity Translation module in
contrib can add this back, but for everyone else it creates a *huge* WTF.
Apologies for how late this is coming, but better now than post-alpha. :\