Bump flake8-bugbear from 18.8.0 to 19.3.0 (#86)
Bump flake8-bugbear from 18.8.0 to 19.3.0 (#86)

Bumps [flake8-bugbear](https://github.com/PyCQA/flake8-bugbear) from 18.8.0 to 19.3.0.
- [Release notes](https://github.com/PyCQA/flake8-bugbear/releases)
- [Commits](https://github.com/PyCQA/flake8-bugbear/compare/18.8.0...19.3.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
sloria/konch