ASTComparatorCategory class. Quick hack, that allow's AST comparing. Not nice, not omnipotent, serves it need's.
ASTComparator #1

Use of ASTComparator for testing builded AST's.
Correct token location recognition.
Grammar was rewritten, for unifyed work with locations(Delimiters is not a part of package or import node.)
Merge branch 'feature/ast_comparator'
Merge branch 'feature/ast_comparator' into develop