UNCOMPILABLE grammata version 0.1.7.6

CHANGED
    - Added general state modifying operations to General.

TODO
    - Refactor module Grammata.
	modified:   src/General.hs
	modified:   src/General/Environment.hs
	modified:   src/General/Execution.hs
	modified:   src/General/Expression.hs
	modified:   src/Grammata/Execution.hs