1.7.7

update to 1.7.7:
(1). Don't run use_pch_style() in default, user can choose to run it by PyComplexHeatmap.use_pch_style()
(2). Add parameter rad to anno_label.
(3). fix bug for auto cmap for category columns
(4). Enabled customized markers with a dict-form colors
(5). fix bug for post_processing when plot=False