Moved utility functions into a Utilities class
Moved utility functions into a Utilities class

- Utility functions are now static methods in the Utilities class
- Added String.insertAt function for inserting strings into other strings
- Added String.antiSlice function for returning the bits that would be deleted in a normal slice operation
- First round of documenation added for all of the above

naschorr/Immobile,naschorr/Immobile