====== util.hashes API ======
Provides utility functions for hashing strings according to several popular algorithms.

The algorithms currently supported are:

  * MD5
  * SHA1
  * SHA256

===== Usage =====
<code lua>
   local hashes = require "util.hashes";
</code>

===== Reference =====
==== hashes.md5(string, hex) ====
==== hashes.sha1(string, hex) ====
==== hashes.sha256(string, hex) ====
All of the above functions return a hash string according to the chosen algorithm. By default the raw binary form is returned, most often you will want to pass //true// as the second parameter to get a nice hex-encoded string.