v2.0

- (new) user interface tweaks
- (new) feed parser fully rewritten
- (new) show youtube/vimeo iframes in "read here"
- (new) keyboard shortcuts for article scrolling & toggling "read here"
- (new) more options for auto-refresh intervals
- (fix) `-base` not serving static files (thanks to @vfaronov)
- (etc) 3rd-party dependencies reduced to the bare minimum