Add `assertNotException` to `Unit`. Opposite of `assertException`.
Add ability for `Mocker` to mock/stub `Iterator`s.
Update `Complexity` tests to stub dependencies.

Conflicts:
	tests/cases/test/filter/ComplexityTest.php
Remove `T_DEAFULT` token from cyclomatic complexity analyzer.
Merge pull request #880 from BlaineSch/feature/complexityFixes

Feature/complexity fixes