Fixed #8

Fixed #12
Fixed #13
Fixed #14

Makefile

@@ -0,0 +1,23 @@
+.PHONY: test
+
+test:
+	pytest
+
+coverage:
+	coverage run --source=src -m pytest
+	coverage html
+
+clean:
+	rm -rf build
+	rm -rf htmlcov
+	rm -rf .coverage
+	rm -rf docs/build
+	rm -rf docs/source/_build
+	rm -rf prof
+	rm -rf tests/prof
+	rm -rf tests/build
+	rm -rf Untitled*.ipynb
+	rm -rf .ipynb_checkpoints
+	find . -name '.pytest_cache' -exec rm -rf {} +
+	find . -name '__pycache__' -exec rm -rf {} +
+	find . -name 'debug.txt' -exec rm -rf {} +