#2625258:LocaleConfigManager::updateConfigTranslations() deletes translations ifa config object's name happens to match that of a shipped configurationobject
#2639352: File records, files themselves lost in translation
#2646100: Exception on php7 + APCu without backwards compatibilty enabled
#2606548: \\Drupal\\rest\\Plugin\\views\\row\\DataFieldRow::render should take into account the 'exclude' flag
7.42 的主要更新:
#1191290:Stopped invoking hook_flush_caches() on every cron run, since some modules use that hook for expensive operations that are only needed on cache clears.
#2392153: Changed the default .htaccess and web.config to block Composer-related files.
#1443308: Added static caching to module_load_include() to improve performance.
#1919338:Fixed double-encoding bugs in select field widgets provided by the Options module. The fix deprecates the 'strip_tags' property on option widgets and replaces it with a new 'strip_tags_and_unescape' property (minor data structure change).
#2545480:Improved MySQL 5.7 support by changing the MySQL database driver to stop using the ANSI SQL mode alias, which has different meanings for different MySQL versions.
#2599326:Fixed a regression introduced in Drupal 7.39 which prevented autocomplete functionality from working on servers that are not configured to automatically recognize index.php.
#1414508:Updated the Archive_Tar PEAR package to the latest 1.4.0>
#1289336:Fixed fatal errors on node preview when a field is displayed in the node teaser but hidden in the full node view. The fix removes a field_attach_prepare_view() call from the node_preview() function since it is redundant with one in the node preview theme layer.
#1862250:Improved the description of the "Trimmed" format option on text fields (translatable string change, and minor UI and data structure change).