Merge tag '140820' into 000000-dev

Tagging v140820
Bug fix; allow for a delay timer to be established when the ACE is running. See websharks/quick-cache#294
Merge branch 'feature/294' into 000000-dev
Bug fix; edge case with terms on new post being published with a `draft` status. See websharks/quick-cache#313
Merge branch 'feature/313' into 000000-dev
Auto-purge Custom Post Type Archive View when necessary.

See websharks/quick-cache#280
Auto-purge XML feeds for Custom Post Type Archive View

See websharks/quick-cache#280
Add new option for Auto-Purge Custom Post Type Archives

See websharks/quick-cache#280
Merge branch 'feature/280' into 000000-dev
Add trailing slash to WP_CONTENT_DIR in Directory / Expiration Time UI

See websharks/quick-cache#267
Auto-purge site cache when JetPack Custom CSS module is saved.

Resolves websharks/quick-cache#246
Clear site cache when any WordPress component is upgraded.

Resolves websharks/quick-cache#145
Clear site cache when WP Core is upgraded, or an active theme or plugin

Resolves websharks/quick-cache#327
Clear site cache when WordPress Reading Settings are updated

Resolves websharks/quick-cache#223
Clarify auto_clear_cache() Dashboard message

Resolves websharks/quick-cache#328
Enhancing `upgrader_process_complete()`. See: https://github.com/websharks/quick-cache/pull/330
Use $upgrader_instance to check plugin state with a single-plugin update
Build a reference to \Plugin_Upgrader_Skin for IDEs
Merge branch 'feature/327' into 000000-dev
Move old changelog entries to separate file to decrease size of readme

 The readme.txt size was causing issues with the readme parser on
 WordPress.org. Old entries will periodically be moved to the new
 CHANGELOG file.