General:

- Test all functions
- Check documentation
- Update links when posting
- Upload documentation


Optimizations:

- Add a @since tag to each method.
- Modify all functions so they accept proper parameters only!
  Raise an error if the parameter is improper.


Features:

- Decide whether to include all input observers in the AMS::Sketchup::Observer
  class.
- Work on toolbar layouts.
