Пакет xdelta3: Информация

Xdelta3 is the third and latest release of Xdelta, which is a set of
tools and APIs for reading and writing compressed deltas. Deltas
encode the differences between two versions of a document. This
release features a completely new compression engine, several
algorithmic improvements, a fully programmable interface modelled
after zlib, in addition to a command-line utility, use of the RFC3284
(VCDIFF) encoding, a python extension, and now 64-bit support.