Python-gyazo-backup

Breaking changes
- Drop Python 2.7/3.4 support 9

Improvement
- Packaging 10
- Python 3.7/3.8 support 9
- Use of python-gyazo 2.x 12

Breaking change
**Please make a copy of the directory before applying this update.**
- Change strategy for merging lists 6

Enhancement
- Update Bootstrap to 4.1.0 8

- Add Python 3.6 support
- Drop Python 3.3 support
- Update theme
- Improve progress bar
- Improve packaging
- Small improvements

- Fix a path to the template directory

- Fix dependencies

- Migrated from [python-gyazo](https://github.com/ymyzk/python-gyazo)