simplify

Graph

(0) +60 +100 tip
Added Raise, fixed TryExcept for empty handler specifications.
Added UnaryAdd, UnarySub, Invert.
Added From and Import.
Added AugAssign, introduced index attributes to LoadTemp/StoreTemp/ReleaseTemp.
Added Global, And, Or, Not and made minor fixes.
A simplified AST processor.
(0) +60 +100 tip