# Functions
CleanupDB drops the test couch databases.
NewTestVDBEnv instantiates and new couch db backed TestVDB.
NewVersionedDBProvider instantiates VersionedDBProvider.
# Structs
BatchableDocument defines a document for a batch.
CommittedVersions contains maps of committedVersions and revisionNumbers.
TestVDBEnv provides a couch db backed versioned db for testing.
VersionedDB implements VersionedDB interface.
VersionedDBProvider implements interface VersionedDBProvider.