add conditions option to uniqueness validator
call to_hash before sanitize_for_mass_assignment to allow Hashie::Mash support
Merge pull request #3420 from gregmolnar/add_conditions_to_validator

add conditions option to uniqueness validator
Merge pull request #3442 from aj0strow/hashie-support

call to_hash before sanitizing to allow Hashie::Mash support
Removed stale references to Mongoid.unit_of_work in benchmark suite, which was removed with Identity Map
Merge pull request #3457 from adammeghji/master

Removed stale references to Mongoid.unit_of_work in benchmark suite, which was removed with Identity Map
Remove skip_version_check from template

Also add a changelog entry for skip_version_check