Feature:
- Implemented a proper thread pool in shellCalc - no more spinning up and destroying threads each calculation function call <br/>
Fix:
- Removed copies of distance in angleData and postPenData - adjusted enums and test functions
- Added compile_test options for building test wasm files <br/>
Refactor:
- Removed unnecessary macros controlling threading in shellWasm.cpp
- Removed unnecessary comments in test.cpp and added basic logic for repeat runs
- Deprecated [removed] shellCombined classes in Python and WebAssembly extensions