[swfmill] prerelease 0.2.11.21

[Hudson Ansley]

FYI- I created the test swfs with flash 8. I'm not sure what a
convolution filter is, but the crash case was created in flash 8, so
if there is such a filter in there, then it was also created with
flash 8.

Also, I was trying to narrow down the filter crash case, and I noticed
that, in addition to colors in filters (there can be any number in
gradient filters), there is also an "adjust color" filter that allows
setting of "hue, saturation, contrast, brightness". This did seem to
be causing problems, but not by itself, and not consistently, but I am
guessing it is always parsed incorrectly, and only sometimes causes
the error. Maybe this is the 18 byte mystery data blob?

Would you like an example swf with just the "adjust color" filter applied?

Regards,
Hudson