Using Flask-Caching, we can memoize the magnet_uri method. Here, a
timeout of 1 hour is chosen, though that value can be fiddled with.
The cache is defined in extensions.py, but gets initialised in
__init__.py.
Add new tool for developing (lint/autopep8/isort/test)
New tool uses flake8 and isort for lint checks.
Deprecate existing tool (still works)
Update readme
Update Travis config
* Update isort settings
* Apply import sorting (isort) on all files in nyaa/
* Fixed Flake8 errors in nyaa/ (see PR for list)
* Add isort to lint.sh and requirements.txt
While installing progressbar33 2.40.0, an error occurs:
Could not find a version that satisfies the requirement
progressbar33==2.40.0 (from -r requirements.txt (line 31)) (from
versions: 2.4)
No matching distribution found for progressbar33==2.40.0 (from -r
requirements.txt (line 31))
Reflect the correct version as shown on pypi which is 2.4.
