This release includes the following changes:
* **cached_property** renamed to **model_cached_property**
* **cache_invalidate_cached_property** renamed to **invalidate_model_cached_property**
* added **invalidate_cache** method in **EAbstractActivity** as coding arrangement
* added **cache_invalidate_activity**
* **model_cached_property**, **invalidate_model_cached_property**, **cache_invalidate_activity** were moved to cache subfolder
* added settings **MODEL_CACHED_PROPERTY_TIMEOUT**, by default 60 second
This release includes the following fixes:
* fixes in **markdown.js** for **formsets**