Update CHANGELOG with verifier regression fix
- Support for `_is_known_type` and `_is_known_value` on union and enum
types.
- More casts for C++ compatiblity (#59).
+- Fix regressions in verifier fix in 0.4.3 that might report out of
+ bounds in rare cases (#60).
## [0.4.3]
- Fix issue with initbuild.sh for custom builds (#43)
