Pyens

------------
- Normalize the variables for parameter extraction, reformat the codes.
[Tony Li]
- Add one notebook for driving cycle and one or charging parameter
fitting. [Tony Li]
- Change cell parameters to use time constants and resistance. [Tony Li]
- Add some comment, fix typos. [Tony Li]
- Update optimizer and fix dataframe index issue (which can lead to
undefined solver behavoir) [Tony Li]
- Add parameter extraction feature to the demo notebook. [Tony Li]

------------------
- Ready for (1.1.2) [Tony Li]
- Merge pull request 2 from mengzhugao/dev_mg_learner. [Tony Li]

Dev mg learner
- Test_battery for parameter extraction, need tuning. [t.ligotion.com]
- Clean code. [Tony Li]
- Reformat files. [Tony Li]
- Update learns. [m.gao]
- Update demo and format the code. [m.gao]
- Parameter extraction feature. [m.gao]
- Merge pull request 3 from tonylee2016/dev_tli_2. [Tony Li]

remove the submodule
- Remove the submodule. [t.ligotion.com]
- Merge pull request 5 from tonylee2016/dev_tli_lint. [Tony Li]

disable mac and windows pipleline
- Update main.yml. [t.ligotion.com]
- Disable mac and windows pipleline. [Tony Li]
- Merge pull request 4 from tonylee2016/dev_tli_lint. [Tony Li]

fix the current lint issue
- Fix the current lint issue. [Tony Li]
- Add req. [Tony Li]
- Fix errors. [Tony Li]
- Add feature to using csv file as simulation input. [Tony Li]
- Update test_base.py. [Tony Li]
- Completed the simulation demo. [Tony Li]
- Simulation demo. [Tony Li]

------------------
- Adding more battery features. [Tony Li]
- Rename. [Tony Li]

------------------
- Reformat. [Tony Li]
- Rename. [Tony Li]
- Create Makefile. [Tony Li]
- Renaming. [Tony Li]
- Copy over proj. [Tony Li]
- Refactor class name. [Tony Li]
- Make code functional. [t.ligotion.com]
- Update LICENSE. [Tony Li]
- Update LICENSE. [Tony Li]
- Refactor flywheel class, create simulation class. [Tony Li]
- Create dynamical class, refactor. [Tony Li]
- Update python-publish.yml. [Tony Li]
- Create python-publish.yml. [Tony Li]
- Update README.md. [Tony Li]
- Tested successful flywheel model with rk45. [Tony Li]
- Adding the first test case. [Tony Li]
- Spin out the first model class, add setup.py. [Tony Li]
- Update README.md. [Tony Li]
- Update design. [Xiaojun Li]
- Revert "Update README.md" [Xiaojun Li]

This reverts commit 84da8e57dcb59622b2ffdee77aa8d879b5954ab1.
- Update README.md. [tonylee2016]
- Update README.md. [tonylee2016]
- Create README.md. [tonylee2016]
- Initial commit. [tonylee2016]