0.1.0, 20120924 -- Initial realease
0.1.1, 20120925 -- Added TODO file Makefile for the docs.
0.1.2, 20120925 -- Spell-checked the docs.
0.1.3, 20120928 -- Improved docs. 'at_least' now uses minimum length.
0.2.0, 20121001 -- New 'some' spec.
