trailing & is not allowed in script queries
Vizier: must pass multiple option selections separately; comma-separated
is invalid
fix tests
Add another remote test
vizier: mask instead of raising exceptions for bad VOtables (they're
unpredictable - we don't want to raise exceptions if some of the data is
invalid... though we do want to at least warn folks... hmm)
safer version: WARN keyword added for invalid votables
regression test for invalid tables
Merge pull request #352 from keflavich/simbad_minor

Trailing & not allowed in script queries
Merge pull request #353 from keflavich/vizier_keyword_fix

Some fixes to Vizier
.travis: sphinx upgrade
use wheels for sphinx 1.2.1
Vizier: refactor to use the generic AstroResponse/AstroRequest and
related caching tools.  Local tests pass now.  Remote tests will be run
when internets r availablz