decode content before sending to parser
add a regression test for previous change
add supporting data file
content is not a consistent type.
UKIDSS: decode content
SDSS: try for that timeout yet again
AHA!  GOT YOU!  That stupid SDSS non-timeout failure was because an
earlier query was caching the query!
GAMA fix: requires specifying encoding='binary'
LAMDA: force everything to string type
IRSA: coerce to unicode
XMatch and unicode.
more unicode
ESO unicode
NVAS: FileContainer encoding
NRAO: Unicode coercion
add a py3 helper that decodes strings that can be decoded.
use stringy in SDSS to fix its urls
hack to deal with zip being iterable in py3 and Table not ducktyping
omg bytes encoding in a friggin test table
.text -> py3 passes (except a legit timeout error - will try again)