Electronic Stopping Power

Oct 8, 2015

2014-12-01:
New features:
- show density of ICRU compounds
- density can be edited
- default units in keV/µm and cm for range.
- units can be toggled to mass units [MeV cm²/g] and [g/cm²] for range.

Bug fixes:
- fix crash if phone does not have external storage.