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This is a Rust implementation of the [Mozilla Archive (MAR) file format][1]
used to deliver automatic updates to Firefox.  It includes both a library and
a command-line tool for reading and writing MAR files.

Currently supports:

* Reading the list of files in a MAR archive
* Extracting file content from a MAR archive

Not yet supported:

* Creating MAR archives
* Signing MAR archives
* Verifying signed MAR archives

This code is subject to the terms of the Mozilla Public License, v. 2.0.

[1]: https://wiki.mozilla.org/Software_Update:MAR