Change records

[docwilmot]

• Variable_get, variable_set, and variable_del deprecated by CMI #2 | Variable_get, variable_set, and variable_del deprecated by CMI
• State/Key-Value storage system implemented
• Removed the theme process layer
• jQuery updated to 1.11.0
• "drupal" replaced with "backdrop" throughout code
• Views added to core
• The class registry has been replaced with a static class map
• Information about tests now in module.tests.info
• New Layout module: Implements a drag & drop model for building layouts
• Dialog API
• Removed the concept of global theme settings
• File entity is now a classed object
• Node entity is now a classed object
• Taxonomy entities are now classed objects
• User entity is now a classed object
• Converted all variables to CMI
• Converted Vocabularies to CMI
• Converted User roles to CMI
• Converted Field API to CMI
• Toolbar replaced with Admin Bar
• [META] Various other theme system cleanup tasks #196
• Remove or consolidate theme functions and templates
• Removed the "Navigation" menu
• Removed the ability for users to select a theme
• Update queries now consistently return the number of all rows matched by the query
• Removed region-specific template suggestions for blocks
• It is now possible to get the last inserted ID from db_merge
• Theme settings converted to CMI
• Entities are now classed objects
• The mail_system variable has been converted to config
• Modules removed from Backdrop (which were in Drupal 7)
• Modules added to Backdrop (which were not in Drupal 7 core)
• System_settings_form() to be deprecated
• language_list() is simplified, locale_language_list() is removed
• Renamed the taxonomy functions that returned multiple values
• Definitions for top-level custom menus are now configuration
• file_delete() now takes file ID as parameter, not a file object
• theme_dblog_message() has been removed
• Changes to AJAX execution
• format_username() changed to user_format_name()
• system_get_date_types() deprecated; use system_get_date_formats()
• Generic sorting function to replace implementations of uasort()
• Placed files in consistent locations for all core modules
• Placed all theme-related functions in modulename.theme.inc file
• $form['#node_edit_form'] removed
• Image styles converted to CMI
• date_iso8601() removed
• Retrieving date formats has been changed
• hook_node_info() removed
• Skip calling of hook_boot() and hook_exit() on cached pages
• The user_pass_rehash() function now requires the user account ID to be passed in
• hook_library() and hook_library_alter() have been renamed to hook_library_info() and hook_library_info_alter()
• Variables changed
• CKEditor module now included in core
• Email module now included in Core
• Link module now included in Core
• Date, Date Popup, and Date Views modules now included in Core
• backdrop_get_path() can now find Layouts
• Page title elements now use the class .page-title instead of ID #page-title
• language_list() now takes a second parameter to return an array of strings
• The category system is removed from user edit and view
• Custom Blocks are now stored in configuration and block_custom table removed
• element_validate_integer() and element_validate_integer_positive() replaced with number element type
• Redirect module now included in Core
• Maintenance pages no longer use theme-provided regions
• system_get_date_formats() return value has changed
• drupal_is_denied() has been removed
• taxonomy_term_uri
• hook_layout_presave() now takes $layout object instead of $data array

[olafgrabienski]

Not sure, if this the right place to post:

• classes_array has been replaced with classes

I didn't find a change record, but the info helped me here: backdrop-contrib/term_body_class#3