Release Name: 0.5.2

Notes:
Desert 0.5.2 Release Notes:

Pivotal Tracker Stories:

"Fix mailer templates -- very slow with Desert" (http://www.pivotaltracker.com/story/show/1141079)
- ActionMailer::Base.view_paths are now cached.  This speeds up ActionMailer tests/specs.  

"Plugin schema migrations should successfully convert from the 'old' scheme to the 'new' scheme" (http://www.pivotaltracker.com/story/show/1139010)
- Pulled cauta/desert at master and fixed specs.

"Add sweepers to Desert's load path" (http://www.pivotaltracker.com/story/show/1150009)
- Pulled willcodeforfoo/desert at master and fixed specs.

"Specs should handle Rails version incompatibilities" (http://www.pivotaltracker.com/story/show/1163331)



Changes: