Fix SnapshotWritable SPartitioner to always be positive
Bump SBT to 0.13.6
Remove unused import from cli main
Remove pivot cli command
Merge snapshotPivot and snapshot cli commands and support multiple outputs
Simplified extract snapshot/chord command names
Require pivot output for chord
Rename pivot extraction format to dense:psv
Merge pull request #266 from ambiata/topic/snapshot-consolidate-pivot

Merge snapshotPivot and snapshot cli commands and support multiple outputs
using the latest mundane on production files

Conflicts:
	ivory-core/src/main/scala/com/ambiata/ivory/core/Factset.scala
	ivory-core/src/main/scala/com/ambiata/ivory/core/Reference.scala
	ivory-core/src/main/scala/com/ambiata/ivory/core/Repository.scala
	ivory-storage/src/main/scala/com/ambiata/ivory/storage/repository/Stats.scala
	ivory-storage/src/main/scala/com/ambiata/ivory/storage/store/package.scala
interim save

Conflicts:
	ivory-operation/src/test/scala/com/ambiata/ivory/operation/validation/ValidateSpec.scala
	ivory-storage/src/test/scala/com/ambiata/ivory/storage/metadata/FeatureStoreTextStorageSpec.scala
	ivory-storage/src/test/scala/com/ambiata/ivory/storage/repository/RepositoriesSpec.scala
all tests are compiling
removed specialised repository creation methods

Conflicts:
	ivory-core/src/main/scala/com/ambiata/ivory/core/Repository.scala
	ivory-operation/src/test/scala/com/ambiata/ivory/operation/ingestion/DictionaryImporterSpec.scala
	ivory-operation/src/test/scala/com/ambiata/ivory/operation/validation/ValidateSpec.scala
	ivory-storage/src/test/scala/com/ambiata/ivory/storage/fact/FactsetsSpec.scala
	ivory-storage/src/test/scala/com/ambiata/ivory/storage/fact/NamespacesSpec.scala
removed the FileName.unsafe methods
simplified the creation methods for references
removed some unsafe calls
merged with master
rebased onto master