v0.14

• bumping to v0.12
• callback should be passed to run() instead of changes()
• update changes callback for clarity
• pass along optargs to changes for things like include_initial
• preping a release
• filter nested keys in without()
• fix for issue #28
• adding new RethinkDB v2.3.4 functionality & tests
• test needs to clean itself up + test for the correct thing
• updating changes for last release