change log for unf
https://github.com/chaselgrove/python-unf

0.1.0 -- 18 April 2017

    Initial version.

    UNF class for calculating Universal Numeric Fingerprints.

0.2.0 -- 19 April 2017

    Added full support for non-default precision (type and value checking, 
    header in printable UNF, and unit tests).

0.3.0 -- 19 April 2017

    Added support for booleans and vectors (tuples and lists).

0.4.0 -- 19 April 2017

    Added support for numpy arrays (as vectors).
