# Revision history for aeson-gadt-th
## 0.2.2
* Do a better job determining which variables are rigid when looking for instances
* Unify discovered instance head with argument type and make the same substitution in the context that constrains the instance we're writing
## 0.2.1.2
* Add version bounds to cabal file
## 0.2.1.1
* Drop markdown-unlit in favor of "Bird"-style LHS to avoid some cross-compilation issues.
## 0.2.1.0
* Extend type variable substitution to handle all current cases in template-haskell.
* Better deal with data constructors having an index that is polymorphic, but can be determined from the other type parameters.
* Handle data constructors that are constrained by type classes.
## 0.2.0.0
* Add changelog
* Add option to modify constructor tag in derived JSON
* Add test suite