Mark Riley

Support for custom migration resolvers

1

## Summary Helps with feature: https://github.com/hhandoko/cassandra-migration/issues/82 Adds support for custom migration resolvers. It seems that the support is planned based on the commented fields in the configuration interface. Anyway, this...

thrift-nano should optionally support a bitmask to declare/determine set fields. This would allow proper support for optional fields. This may be compiled out.

Optionally generate field info (id/name/type) structs

Add support for constants and constant initialization to the generator

Add support for thrift services. Like other features, we should be able to compile services out.

Generate hash function for structs to allow for struct keys in maps

Create a generator to generate simple structs.