added href, colour_key, feature_label, canvas_attributes, features functions
added href, colour_key, feature_label, canvas_attributes, features functions

Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-draw,Ensembl/ensembl-webcode