Rails.root was no Pathname object prior to 2.3 (fixes #67)
Removed Rails gem dependency because of problems with decl_auth causing the latest Rails version to be loaded and bumped the minor gem version
Prevent Rails 3 deprecation warnings on authorization backend routes [dgm]
Fix for defining decl_auth before_filter multiple times (Fixes #72)
Added instructions for testing with RSpec
Added example for RSpec
Fixed queries for combinations of :join_by :and and if_permitted_to with OR'ed rules
Fixed exception from frozen role_symbols

Closes #79
Updated contributors
Updated Changelog and bumped patch level to 0.5.2
Allow changing the default role
Prevent unnecessary queries from proxy scope
Fixes failed_auto_loading_is_not_found, closes #94
add and test has_any_role?

Allows passing an array of roles and returning true/executing a block if ANY of the supplied roles are present rather than ALL
add and test has_any_role_with_hierarchy?

Allows passing an array of roles and returning true/executing a block if ANY of the supplied roles are present rather than ALL
Fixes documentation, closes #87
Test case for #93
Documentation cleanup and minor additions for clarification on using :additional_members
Further additional_member clarification
RAILS_DEFAULT_LOGGER creates a warning on rails 3