Migrate to cosmos sdk v0.41

[prestwich]

http://docs.cosmos.network/v0.41/migrations/app_and_modules.html

• [ ] Makefile step to build protobuf
• [ ] Messages into protobuf messages
• [ ] Queries into protobuf messages
• [ ] Message services
• [ ] Query services
• [ ] register the services
• [ ] remove amino codec
• [ ] update keeper with new codec marshaler
• [ ] update CLI
• [x] remove alias file (#138)
• [ ] remove rest endpoints ( ? )

[prestwich]

also check the Building Modules guide

[prestwich]

Old context: Msg -> Handler Query -> Querier

New context Msg and Query are protobuf messages Handler and Querier are gRPC services

[ewilz]

I can take a look at the codec stuff