doc: update todo

Author: asdf8601

TODO.md

@@ -1,8 +1,5 @@
 # TODO
 
-- [ ] refactor github workflow
-- [ ] !!! add tests for inequality module
-- [ ] Update readme
-- [ ] add type hinting
-- [x] Fix all pep8 violations (flake8)
-- [x] add src structure
+- [ ] !!! tst(inequality): add tests for inequality module
+- [ ] doc(readme): update examples and remove travis.
+- [ ] enh(type): add type hinting