Change record status: 
Project: 
Introduced in branch: 
8.x
Description: 

hook_library() and hook_library_alter() were not named according to standard Drupal naming patterns. These hooks have been renamed as hook_library_info() and hook_library_info_alter() respectively.

hook_library_info and hook_library_info_alter further replaced by *.libraries.yml file

Impacts: 
Module developers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other: 
Not done