stripping of suffix fails if it ends in full stop.

[petri]

Same happens if the ending character is a comma. Example:

>>> from cleanco import cleanco
>>> y='posnegansett properties, llc.'
>>> ya=cleanco(y)
print ya.type()
['Limited Liability Company']
>>> print ya.clean_name()
posnegansett properties, llc

The result should not have the 'llc' suffix.

[psolin]

Fixed.