Second release of SongEvo.
Addition of Sara J. Evans as an author.
New functionality:
-Option to model conformist, prestige, and content biases for a selected range of traits, with bias optionally varying over space.
-Option to model individual females.
-Option to model female learning separately from males.
-Option to allow females to choose males according to their preference.
Clarification of parameters.
Development version of SongEvo.
First release of SongEvo.