hdgarrood/redmine_acts_as_taggable_on — pull request #7 by mxmader (2013-09-05 16:22:44+00:00)
Title: adding ability to allow extra columns to "tags" and "taggings tables via TABLE_SCHEMA_CHECK_ALLOW_EXTRA_COLUMNS environment variable

tested this against redmine 2.3 with redmine_contacts 3.2.4 - migrating up and down with or without the environment variable works. you'll want to confirm using your build manager (travis, as i understand it)