Update requirements

* Use a flake8 release again

requirements/big_mode.txt

@@ -2,7 +2,7 @@
 channels-redis>=2.2,<2.4
 django-redis-sessions>=0.6.1,<0.7
 psycopg2-binary>=2.7.3.2,<2.8
-aioredis>=1.1.0,<1.2
+aioredis>=1.1.0,<1.3
 
 # Requirements for fast asgi server
 gunicorn>=19.9.0,<20

requirements/development.txt

@@ -1,7 +1,5 @@
 coverage
-#flake8
-# Use master of flake8 until flake8 3.6 is released that supports python3.7
-git+https://gitlab.com/pycqa/flake8.git
+flake8
 isort
 mypy
 pytest

requirements/production.txt

@@ -8,6 +8,6 @@ jsonfield2>=3.0,<3.1
 jsonschema==3.0.0a3  # TODO: use a stabel version before release
 mypy_extensions>=0.4,<0.5
 PyPDF2>=1.26,<1.27
-roman>=2.0,<3.1
+roman>=2.0,<3.2
 setuptools>=29.0,<41.0
 typing_extensions>=3.6.6,<3.7