Fix a bug when using a custom exception with a custom exception message. Also remove tests for Python 3.2 and 3.3. (#55)

* Fix a bug in the code when using a custom exception with a custom exception message. Added a test for this condition.

* Fix line spacing lint error.

* Update CI config to remove Python 3.2 and 3.3, which are no longer supported by tox.

* Remove python 3.2 and 3.3 from travis config.

* Bump version number to 0.4.1.

* Also update version number in init file to 0.4.1.
6 files changed