Bump snap-core to 0.10.
Bump case-insensitive version
Merge pull request #167 from glguy/master

Bump case-insensitive version
Bump version number down to 0.9.3 (no reason to go to 0.10 now that we've decoupled snap version)
Relax case-insensitive bounds (didn't realize the lower bound got bumped so aggressively)
Merge tag '0.9.3.1' into nonascii-filenames