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Alexandre Erwin Ittner
e4f66475d8
Add a protocol and the APIs to straightforwardly support user avatars in client applications. The protocol is designed to transfer avatars in background, between friends only, and minimize network load by providing a lightweight avatar notification for local cache validation. Strict safeguards are imposed to avoid damage from non-cooperative or malicious users and to limit network usage. The complete documentation is available in docs/Avatars.md and sample code is available in testing/test_avatars.c. Code and documentation are released under the GNU GPLv3 or later, as described in the file COPYING.