Concern about bugs

[zorarkdouble8]

I need a test suite to test my code and make sure I don't break anything. This is critical at this stage of development because I'm creating system classes that need to work. IE: it'll be a lot harder to find bugs a month from now.

[zorarkdouble8]

Added the catch framework for tests, to enable tests please set the global macro accordingly.
Here's more on catch: https://github.com/catchorg/Catch2/tree/v2.x