attempt to refresh master
added init
fix import error
from future import now follows astropy guidelines
small changes according to astropy guidelines
got vos_catalog to work
use new str formatting for webquery
changed absolute to relative imports
moved vo server and client to new loc
renamed vo query to client; moved client and server to new package
work in progress
vo.client using new io.votable package
basic conesearch is working
working simple cone search with examples
updated conesearch doc; added cache control
expanded VOSCatalog class; generalized kwargs passing
Implement async conesearch - in progress
conesearch async now working
force Future thread to stop
added doc warning for Future.terminate