Add protobuf model_load support
Add optional clustering to ProductModel serialization
Add protobuf serialization to Groups
Pull ProductModel out of distributions
Merge branch 'master' into loom
Add protobuf to libraries in setup.py
Add protobuf serialization to python dbg.models
Add protobuf serialization to PitmanYor model
Merge branch 'master' into loom
Merge branch 'master' into loom
Make clustering models conform to Serializable api
Fix PitmanYor.dump
Fix clustering dump_protobuf methods
Add protobuf dependencies
Merge branch 'master' into loom
Fix protobuf serialization of clustering
Add cleanup_on_error argument to tempdir
Add protobuf streaming functions to fileutil
Clean up cmake modules
Add protobuf_stream.hpp