Refactored Caching, Refactored BnfNodeParser, Introduced Sphinx

Makefile

@@ -6,6 +6,9 @@ test: clean
 
 clean:
 	rm -rf build
+	rm -rf docs/build
+	rm -rf docs/source/_build
 	rm -rf prof
+	rm -rf tests/prof
 	find . -name '.pytest_cache' -exec rm -rf {} +
 	find . -name '__pycache__' -exec rm -rf {} +