New examples included, with how to use split-up targets.

Bugfix for splitting up large targets.
Also enabled math (+,*) with Stack objects, and can name Layers, among other improvements.

Includes up to Element #80 in _AtomicInfo.py.

This version adds the ability to automatically split up the TRIM.IN file into multiple targets, if you pass more layers than TRIM.exe can handle.

Also other minor updates:

• Can name Layers
• print objects to get info about them
• Si & In added to element list
• Create custom Elements on-the-fly, without adding to AtomicInfo.py
• Updated Example to demonstrate these capabilities.

First release. Only contains H, Al, Ga, As, Sb in AtomicInfo. More atoms can be added easily - instructions found in AtomicInfo.py.