Grammar in Arbitraries
Introduce Dictionary.empty
Remove dead code in renameDictionary
Remove DictionaryTextStorageV2 sanity check test
Correct ordering of dictionary text v2 storage and broken spec
Fix DictionaryThriftStorageSpec due to internal Map in thrift format
Use constructor pattern matching for Definitions
Merge pull request #234 from ambiata/topic/dictionary-indexing-tweaks

Topic/dictionary indexing tweaks