start towards fixing issue 186 by refactoring vizier
added important vizier tests & test data
restored capsys in parametrized test
fixed remote tests
fixed bug in ROW_LIMIT ConfigurationItem
vizier queries need to have parameters separated by \n
Added back ROW_LIMIT to irsa
trivial change to simbad docs showing how to do a bibqty query
Merge pull request #196 from keflavich/simbad_docbonus

trivial change to simbad docs showing how to do a bibqty query
Merge pull request #194 from jdnc/fix-row-limits

Fix row limits
Merge pull request #190 from keflavich/vizier-refactor-2

Vizier: add tests for get_catalogs & refactor
Merge pull request #193 from keflavich/vizier_bugfix

Small bugfix to Vizier keyword queries