#2516 : add default children for default_plugins of placeholders configured in settings.py.
delete post_add_process and add notify_on_autoadd and notify_on_autoadd_children method to CMSPlugin
clean some mess I let behind me...
Add support for changelist in render_model
Update requirements
Add documentation warning for active area overlap
Merge pull request #2538 from yakky/feature/doc_fixes

Update requirements
Issue #2705 : inheritance of placeholder configuration
Merge pull request #2539 from yakky/feature/frontend_changelist

Add support for changelist in render_model
Merge pull request #2541 from DylannCordel/issue2507

inheritance of placeholder configuration
Doc correction to be coherent with djangocms-text-ckeditor documentation
Merge pull request #2518 from DylannCordel/issue2516

Add default children for default_plugins of placeholders