Releases for Render cache

This has been running on one production site since almost a year now, so its time for a stable release:

Issue #2091661 by Fabianx: Support preserving render keys for render_cache_to_markup() option.
Issue #2091661: Generally hash per view_mode .

First alpha release!

Issue #2074307 by Fabianx: Hi-jack node_show and use entity_view instead of node_view_multiple in submodule for caching support.
Issue #2074213 by Fabianx: Code Review and Cleanup and adding proper API.

* Use render_cache_entity_view_callback instead of hijack (bad practice)
** The views class should be renamed as well.

* Prepare a global $context and $cache_info that is compatible with
* drupal_render().

* Set rendering method locally in $cache_info

* Uses native drupal_render caching as much as possible. (including full
* support for #attached)

* Use cache_get_multiple()

* Use $cached_entities instead of $cached

* Reworked cache id creation, used standard drupal_render_get_cid_parts

* Used standard entity_extract_ids function

* Allow specifying granularity and default to _PER_ROLE_

* Implement hook_flush_caches() to clear cache_render on drush cc all.
Issue #2074213 by Fabianx: Remove unneeded code
Issue #2074213 by Fabianx: Fix render_cache_get_entity_cid function signature.
Issue #2074213 by Fabianx: Add dependency for entity module.
Issue #2074213 by Fabianx: Move the views plugin to its own submodule.
Issue #2074213 by Fabianx: Fix problem when enabling the module via drush.
Issue #2074213: Finish the move of the module