Update __version__ from 1.4

[trevorbaca]

The __version__ attribute appears to show 1.4 for all releases.

$ python -m pip show roman
Name: roman
Version: 4.2
Summary: Integer to Roman numerals converter
Home-page: https://github.com/zopefoundation/roman
Author: Mark Pilgrim
Author-email: 
License: ZPL 2.1
...

>>> import roman
>>> roman.__version__
'1.4'

[perrinjerome]

This issue is duplicate of #24 , the problem is fixed in git as 3c99821 but there is no released version with the fix.

[icemac]

Just released https://pypi.org/project/roman/5.0/ containing a fix.