module documentation

Implementation of clusters.

Class Cluster Implementation of a cluster in a ZIM file.
Class EmptyCluster A special type of pyzim.cluster.Cluster that is always empty.
Class InMemoryCluster A variation of Cluster that decompresses only once, storing all data in RAM.
Class ModifiableClusterWrapper A special type of cluster that wraps another cluster and adds methods for modifying the cluster.
Class OffsetRememberingCluster A variation of Cluster that reads offsets only once, storing them in memory.