v0.21.0

- Fix typo in help menu [#485](https://github.com/Rigellute/spotify-tui/pull/485)
- Add save album on album view [#506](https://github.com/Rigellute/spotify-tui/pull/506)
- Add feature to like a song from basic view [#507](https://github.com/Rigellute/spotify-tui/pull/507)
- Enable Unix and Linux shortcut keys in the input [#511](https://github.com/Rigellute/spotify-tui/pull/511)
- Add album artist field to full album view [#519](https://github.com/Rigellute/spotify-tui/pull/519)
- Handle track saving in non-album contexts (eg. playlist/Made for you). [#525](https://github.com/Rigellute/spotify-tui/pull/525)