Bump flask from 0.8 to 1.0

Bumps [flask](https://github.com/pallets/flask) from 0.8 to 1.0.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/master/CHANGES.rst)
- [Commits](pallets/flask@0.8...1.0)

Signed-off-by: dependabot[bot] <support@github.com>

setup.py

@@ -7,7 +7,7 @@
     install_requires = [
         'python-dateutil>=1.2',
         'SQLAlchemy==0.7.3',
-        'Flask==0.8',
+        'Flask==1.0',
         'sqlalchemy-migrate>=0.7.1'
         ],
     setup_requires=[