A small release, where some functions like q3c_ang2ipix() and a few others are marked as parallel safe to enable parallel queries in PG. (note the main queries like q3c_radial_query and q3c_join are still not marked as parallel safe)
Note that the version of the extension is changed to 2.0.1 so you may need to do
alter extension q3c update to '2.0.1'