Rails 4 support - tests are green
rails 4 now at master
Rails 3 compatibility for price of lots of deprecation warnings in logs =\
ruby 1.8.7
Ruby 1.8.7 + Rails 3 - green;
Ruby 1.9.3, 2.0.0 + Rails 3/4 - green;
Added Compatibility module to remove ActiveRecord 4 deprecation warnings.
todo
Include tag association in core.
Fixed save_tags error
oops, fixed range
removed junk comments from related.rb
Merge pull request #356 from arabonradar/rails4

Rails 4 support