20161029

Argon2id added
Better documentation
Dual licensing CC0 / Apache 2.0
Minor bug fixes (no security issue)

20160406

Version 1.3 of Argon2
Version number in encoded hash
Refactored low-level API
Visibility control for library symbols
Microsoft Visual Studio solution
New bindings
Minor bug and warning fixes (no security issue)

20151206

Python bindings
Password read from stdin, instead of being an argument
Compatibility FreeBSD, NetBSD, OpenBSD
Constant-time verification
Minor bug and warning fixes (no security issue)