v1.3.0

Hello everyone! Been a long time, huh?

New version of sptlrx brings some major improvements:

1. Spotify support has been finally fixed. You will need to authenticate using the new sptlrx login command. The full guide can be found in the README;
2. We no longer depend on a hosted lyrcisapi instance – lyrics are now fetched directly from lrclib.net;
3. The issue of the mpd position being clamped to seconds, which could cause problems such as random flickering (#73), has been fixed;
4. The release is now packed with a sptlrx.5 manual page. Thank you, @mdosch!