- Bumped version

- README.md

- README.txt
- OCA_SECURE_MODE constant. When on, all output goes through wp_kses
- 3 new filters: Oca/Content_Fetcher/Fetcher_Response and Oca/Content_Fetcher/Fetcher_Nopriv_Response
- Changed OCA/Fetcher/User/Data to Oca/Content_Fetcher/User_Data
- cacheExpiration parameter to ocaVars

- default output option changed to echo
- better fetcher and nopriv_fetcher logic, more flexible and secure
- better frontend cache management
	- separated rules and better logic for priv and nopriv caches
	- ocaVars frontend_cache_priv variable changed to frontendCachePriv
	- ocaVars frontend_cache_nopriv variable changed to frontendCacheNopriv
- improved response from `is_user_logged_in`: now it's an array with `userStatus` ('priv' or 'nopriv') and arbitrary data (with a WP filter)
- new filter `'Oca/Fetcher/User/Data'` for arbitraty user data in ajax response from `is_user_logged_in` request
- Improved inline documentation
- minor tweaks

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