Release 0.2-0:
  * Added Wikipedia link to DESCRIPTION.
  * Fixed several memory errors flagged by Valgrind.
  * Renamed raw_to_char() to raw_as_char().

Release 0.1-0:
  * Added pw_hash() and pw_check()
  * Added blake2b()
  * Added raw_to_char()
  * Added gen_nonce()
