Pyminifier3

What's Changed
* Fix docs and pyz compressions by dzhuang in https://github.com/dzhuang/pyminifier3/pull/17


**Full Changelog**: https://github.com/dzhuang/pyminifier3/compare/v2.3.2...v2.3.3

What's Changed
* Fix enumerate local modules win by dzhuang in https://github.com/dzhuang/pyminifier3/pull/10
* Fix --pyz option. by dzhuang in https://github.com/dzhuang/pyminifier3/pull/5
* Used zipFile.writestr and fixed writing target .py twice by dzhuang in https://github.com/dzhuang/pyminifier3/pull/13
* Fix obfuscate class member by dzhuang in https://github.com/dzhuang/pyminifier3/pull/14
* Revert use_unicode by dzhuang in https://github.com/dzhuang/pyminifier3/pull/16


**Full Changelog**: https://github.com/dzhuang/pyminifier3/compare/v2.3.1...v2.3.2

What's Changed
* Fix result print by dzhuang in https://github.com/dzhuang/pyminifier3/pull/1
* Use double quotes. by dzhuang in https://github.com/dzhuang/pyminifier3/pull/2
* Added demo file. by dzhuang in https://github.com/dzhuang/pyminifier3/pull/3

**Full Changelog**: https://github.com/dzhuang/pyminifier3/compare/v2.3...v2.3.1

- Merged PR from original package
- [57 Fix reduce_operators() with check whether prev_tok is not None](https://github.com/liftoff/pyminifier/pull/57)
- [81 A conflict file entry in the WINDOWS operating system](https://github.com/liftoff/pyminifier/pull/81)
- [92 https://github.com/liftoff/pyminifier/pull/92](https://github.com/liftoff/pyminifier/pull/92)
- [131 Resolve the file size is 0 error](https://github.com/liftoff/pyminifier/pull/131)
- [134 Drop python2 support and fix setup.py install](https://github.com/liftoff/pyminifier/pull/134)
- Removed Python 2 code
- Styling
- isort imports