*All* URLs were checked manually, but only once per domain!
I mostly concerned myself with URLs in documentation rather than source
code because the latter may or may not have impactful changes, while the
former should be straight forward.
Changes in addition to simply adding an s:
- changed pip and pypi references as their location has changed
- MPoD (iOS app) url redirects to Regelian, so I replaced those
- updated homebrew references
Notable observations:
- beets.io does have HTTPS set up properly (via gh-pages)
- beatport.py uses the old HTTP url for beatport
- as does lyrics.py for lyrics.wikia.com
- https://tomahawk-player.org/ expired long ago, but the http page
redirects to https regardless
- none of the sourceforge subdomains have https (in 2019!)
- MetaSources get loaded from the modules automatically
- The MetaSources can define their own item_types, that get loaded for the plugin
- __init__ doesn't need any changes to accept new metasources
- Fix the --sources option to actually accept sources
(it was being interpreted as boolean flag before, crashing the plugin)
- More safety w.r.t. external dependencies
