Grave v1.1

Grave version 1.1 has just a few changes:

• Spells are now described in terms of stamina spent in casting (S) rather than spell level (L); they work the same as before, and you can still use spells from other games, but this should clear up some confusion.
• Dying Star (a wizardry spell) has always been kind of broken when cast at high levels. It has been rewritten to no longer require doing division at the table, and to more consistently kill its caster (as the gods intended). 
• Other minor wording changes for clarity in a couple places.