python-unidiff-0.5.5-bp155.2.12

- %python3_only -> %python_alternative

- run the testsuite, call spec-cleaner

- Remove superfluous devel dependency for noarch package

- Ensure neutrality of descriptions.

- Update to version 0.5.5
  * Updated PatchSet constructor to accept string data.
  * Added support to parse extended patch info.

- initial version