geniusr 1.2.1

apply new HTML5 fixes for CRAN
remove previously deprecated functions (get_album|artist|song_meta(), get_artist_songs(), scrape_lyrics_id|url(), scrape_tracklist())

geniusr 1.2.0

get_album|artist|song_df() is the new name of the function previously known as get_album|artist|song_meta()
get_artist_songs_df() is the new name of the function previously known as get_artist_songs(). get_artist_songs() now returns a nested list object, with additional fields not present in the tidy sister version (get_artist_songs_df())
get_lyrics_id|url() is the new name of the function previously known as scrape_lyrics_id|url()
get_album_tracklist_id() is the new name of the function previously known as scrape_tracklist()

get_album|artist|song() returns a nested list object, with additional fields not present in the tidy sister version (get_album|artist|song_df())
get_album_tracklist_search() supports the retrieval of album tracklists using artist_name and album_name.
get_lyrics_search() supports the retrieval of lyrics using artist_name and song_title.
search_genius() supports a generic search of hosted content on Genius
tidy_song_xxx() and tidy_album_xxx() functions support the extraction of deeply-nested elements, of genius_song and genius_album objects respectively, into a tidy tibble format.
album|artist|song_to_df() simplify genius_album|artist|song objects respectively, returning tidy tibbles.
browse_genius() and browse_genius_resource() support easy navigation to Genius URLs from R.

comment_count field added to get_album_df() output
artist_twitter_name added to get_artist_df() output
sort argument added to get_artist_songs() and get_artist_songs_df(), order results by "title" (default) or by "popularity"
remove attempt package dependency

Correct license added.
Fixed a bug occurring in get_song_meta functions to handle missing song fields (#6).
Fixed a bug in scrape_lyrics_ functions to handle instrumental songs (#8).