Remove .DS_Store files from /formats
formats: Update xsd-fu documentation for migration to bioformats
formats: Rename "Xsd Fu" to xsd-fu

This matches the name in use.
merge develop -D org -I include -E exclude: PR 339 (Remove .DS_Store files from /formats (rebased onto develop))
merge develop -D org -I include -E exclude: PR 340 (formats: Update xsd-fu documentation)