What's Changed
* Adding migration file for WT 6.3 change. by nhstephan in https://github.com/newshour/wagtailimagecaptions/pull/10
* Registering model with reference index. by nhstephan in https://github.com/newshour/wagtailimagecaptions/pull/11
**Full Changelog**: https://github.com/newshour/wagtailimagecaptions/compare/v0.2.2...v0.2.3