Modifiable-items-dictionary

Adding the following changes:
- using mypy to find typing errors
- used pylint to find other small errors
- added pylint and mypy to pipeline

What's Changed
* Typing refactor by tybruno in https://github.com/tybruno/modifiable-items-dictionary/pull/23


**Full Changelog**: https://github.com/tybruno/modifiable-items-dictionary/compare/v3.0.1...v3.0.2

What's Changed
* Adding `__slots__` to `ModifiableItemsAttrDict`. by tybruno in https://github.com/tybruno/modifiable-items-dictionary/pull/22


**Full Changelog**: https://github.com/tybruno/modifiable-items-dictionary/compare/v3.0.0...v3.0.1

Added the following features

- `ModifiableItemsAttrDict`: Extends `ModifiableItemsDict` and adds the ability to do attribute lookup.

What's Changed
* Add modifiable items attr dict by tybruno in https://github.com/tybruno/modifiable-items-dictionary/pull/21


**Full Changelog**: https://github.com/tybruno/modifiable-items-dictionary/compare/v2.0.3...v3.0.0

Added the following improvements

- Added Citation for Raymond Hettinger ([rhettinger](https://github.com/rhettinger)) in README.md and Docstrings
- Changed imports to be more readable
- Fixed Spelling
- Removed Example in Module Docstring

- Added examples.py file
- Improved import pathing
- Changed directory structure
- changed typing variable to match pep 8 standards

Changes
Updated Project Description for `setup.py`