https://www.akkadia.org/drepper/SHA-crypt.txt
[Richard Levitte]
+ *) Heartbeat support has been removed; the ABI is changed for now.
+ [Richard Levitte, Rich Salz]
+
Changes between 1.1.0b and 1.1.0c [xx XXX xxxx]
*) ChaCha20/Poly1305 heap-buffer-overflow