Don't hard code the list of types
Add missing symbol translation
Make modularized test filter abstract

This excludes it from the generated list of i18n types.
Update changelog
Create Filter.register
Explicitly register filters
Don't rely on inheritance to register filters
Load all translations

Also set the default locale to English. This avoids an I18n deprecation
warning.
Remove unnecessary klass parameter
Fix deprecation warning

    Warning: Deprecated pattern style '.../tmp/*' in .../.rubocop.yml
Merge pull request #185 from orgsync/register-filters

Explicitly register filters
Fix name of error in error_args

This essentially prevented the :invalid_nested from working. I messed
this up in d99504983e24c1a5f6a10066cf39abb2ee026744.
Update changelog
Bump version to 1.2.2
Update to Ruby 2.1.2
Fix #192; only roll back if in a transaction
Update changelog
Merge pull request #193 from orgsync/issue-192

Only raise rollback errors when inside transactions
Bump version to 1.2.3
Re #190; fix Rubinius build