Add tifffile support for MultiImage
Update multi_image test and install tifffile for travis.
Fix implementation errors
Free disk space during travis install
Quiet down optional installs to avoid hitting 10000 line limit
Add tifffile support for MultiImage
Update multi_image test and install tifffile for travis.
Fix implementation errors
Cleanup
Add animated gif, a test for it, and tests without conserve_memory.

Add animated gif, and a test for it, plus tests without conserve_memory

Add the gif file
Fix problems from rebase.