Build Unit Tests

In order to ensure a stable and regression-proof version of Wintermute; building unit tests for each class is necessary. The following classes are in need of unit testing (checked ones are ones with completed *and* passing tests):

 - [ ] `Wintermute::Version`
 - [ ] `Wintermute::Application`
 - [ ] `Wintermute::Procedure::Module`
 - [ ] `Wintermute::Procedure::Designation`