Refactor Part 1

Large Refactor of MorphoMetriX. Changes include:
- Removing unused code and comments
- Moving redundant code into functions
- reimplemented functions for improved memory management and performance
- Improve readability for me and future developers

So far:
Object adding / removing is re-worked. Re-draws scene with stack of objects after every large event (undo, mouse press, etc.)

ToDo:
- Update tool bar with scene update
- Calculate measurements in stack on export
- Test code before V2 launch

.gitignore

@@ -535,3 +535,4 @@ morphometrix/build/windows/warn-windows.txt
 morphometrix/build/windows/windows.exe.manifest
 morphometrix/build/windows/xref-windows.html
 morphometrix/dist/MorphoMetriX.exe
+morphometrix/imwin.py