This should allow for a workaround to the issue #61.
Merge tag 'v0.10.1' of https://github.com/tedivm/Stash into HEAD
FIX: allow the FileSystem driver to configure the key hashing function.
FIX: throw an exception when the key hash function does not exist ins…
…tead of defaulting to md5.
Add test for keyHashFunction option in the FileSystem driver, test fo…
…r success and for the exception.
Add test to check that directories are created using the key hash fun…
Looks great, thanks for the PR!