New creates an initializes an instance of Gerrit.

NewStore returns a new DefaultStore.

ErrNotFound should be returned by Store implementations when CL number doesn't exist.

CL represents a merged CL that we send to the subscriber of the poller.

DefaultStore is a default implementation of the Store interface.

Gerrit tracks merged CLs.

Store represents the shape of the storage system.

NotifyFunc represents the function signature the poller notifies on a new item.