remove incorrect progressbar dependency
try to make travis work smoothly
all header.update changed to header[k] = v
header.update -> h[k] = v for cubes
more of the same - WOW that occurred in a lot of places
whitespace
ascard -> cards
deprecation: header_key -> header_keyword
travis: remove python2.6-tk
travis: use wheels for mpl
travis: bugfix, also wheels for scipy