Initial implementation of MetadataBuilder for issue #170
Added the QfdMetadataBuilder and finished adding the builders to the unit tests
Remving duplicate count in metadata serde
Merge pull request #174 from calrissian/metaBuilder

Initial implementation of MetadataBuilder for issue #170
Rename BaseMetadataSerde to SimpleMetadataSerDe
Merge pull request #175 from calrissian/metadataSerDe

Initial implementation of metadata serde
Adding expiration filter. Fixes #118. Fixes #100