Q3C-2.0.0

This is a release with some functionality change where the proper motion functions now have an extra parameter which identify whether you are using pmra*cos(dec) or pmra convention.
So if you are using Q3C function
q3c_join_pm()
you have to change the call from for example
q3c_join_pm(ra,dec,pmra,pmdec,epoch,ra,dec, max_delta_epoch,radius) to
q3c_join_pm(ra,dec,pmra,pmdec,1,epoch,ra,dec, max_delta_epoch,radius) if your proper motions include the cos(dec) correction
or to
q3c_join_pm(ra,dec,pmra,pmdec,0,epoch,ra,dec, max_delta_epoch,radius) if they don't.
Also this release makes q3c extension relocatable to other schemas by using
alter extension q3c set schema to myschema;