marshmallow==3.0.0rc4

# Testing
pytest==4.3.0
tox==3.7.0

# Syntax checking
flake8==3.7.6

# Install this package in development mode
-e .

marshmallow==3.0.0rc4

# Testing
pytest==4.3.0
tox==3.7.0

# Syntax checking
flake8==3.7.7

# Install this package in development mode
-e .

Bump flake8 from 3.7.6 to 3.7.7
Bump flake8 from 3.7.6 to 3.7.7

Bumps [flake8](https://gitlab.com/pycqa/flake8) from 3.7.6 to 3.7.7.
- [Release notes](https://gitlab.com/pycqa/flake8/tags)
- [Commits](https://gitlab.com/pycqa/flake8/compare/3.7.6...3.7.7)

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