Small updates + Python 3.9 (#36)
* Recreated dev branch and incremented version
* Update qubovert_tutorial.ipynb
* added insert, pop, and remove to annealresults
* fixed annealresults test
* fixed annealresults test
* fixed annealresults test
* fixed annealresults test
* added get_info and create_from_info
* removed has_function in favor of ordering_key
* deg(0) = -inf
* Update _dict_arithmetic.py
* Update test_dictarithmetic.py
* Update test_dictarithmetic.py
* Update _dict_arithmetic.py
* Added Python 3.9 tests and publish (#35)
* Update build.yml
* Update publish_manylinus_wheels.yml
* Update build.yml
* Update publish_windows_macos_wheels.yml
* Update .lgtm.yml
* attempted-readthedocs-fix
* trying to get readthedocs to work
