Implemented EasySession checking if moodbar/bpm-tools is installed
Fixed moodbar distance
Implemented DEFAULT_CONFIG
Made fix_graph more clever: only delete edge if both songs are full or the mean distance is lower than the one to add
Fixed broken test in song.py
Removed blist dependency for history.py
Fixed dump typo, causing a showbreaking bug
Playing around with heapq and distance_add
Removed blist as a dependency
Fixed broken test, improvied graph vertex label color, increased max_neighbor count to 7 by default