LyricsGenius 3.0.0 is now available.

New

All requests now go through the Sender object. This provides features such as retries genius.retries and handling HTTP and timeout errors. For more info have a look at the guide about request error handling.
Added OAuth2 class to help with OAuth2 authentication.
Added PublicAPI class to allow accessing methods of the public API (genius.com/api). Check this page for a list of available methods.
Added the Album type and the genius.search_album() method.
Added the genius.tag() method to get songs by tag.
All API endpoints are now supported (e.g. upvote_annotation).
New additions to the docs.

Changed

GENIUS_CLIENT_ACCESS_TOKEN env var has been renamed to GENIUS_ACCESS_TOKEN.
genius.client_access_token has been renamed to genius.access_token.
genius.search_song() will also accept song_id.
Lyrics won't be fetched for instrumental songs and their lyrics will be set to "". You can check to see if a song is instrumental using Song.instrumental.
Renamed all interface methods to remove redundant get_ (genius.get_song is now genius.song).
Renamed the lyrics method to genius.lyrics() to allow use by users. It accepts song URLs and song IDs.
Reformatted the types. Some attributes won't be available anymore. More info on the types page.
save_lyrics() will save songs with utf8 encoding when extension='txt'.
Using Genius() will check for the env var GENIUS_ACCESS_TOKEN.