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
Merge branch '000000-dev' into feature/55