Unittest-extensions

What's Changed
* Exceptions with non str args by Maxcode123 in https://github.com/Maxcode123/unittest-extensions/pull/2
* Redefines the `args` decorator by Maxcode123 in https://github.com/Maxcode123/unittest-extensions/pull/3

Breaking changes
* The `args` decorator now does not support dictionary objects as input

**Full Changelog**: https://github.com/Maxcode123/unittest-extensions/compare/v0.2.4...v0.3.0

* Catch and report correctly empty exceptions raised in subject method

* Introduce `TestCase.subjectKwargs` method
* Return a deepcopy of the result in `TestCase.cachedResult` method

Correct error catching in `result()`.

* Raise `TestError` in `TestCase.cachedResult`

* Introduce `TestCase.cachedResult` method