Open is a wrapper around os.Open that will also check FS to access embedded data.

ReadDir replaces ioutil.ReadDir, trying to use FS.

ReadFile replaces ioutil.ReadFile, trying to use FS.

FixWindowsPaths will reset all file paths loaded to replace windows style slashes with unix style slashes.

FS is the filesystem that Open, ReadFile and ReadDir will query.

OSFallback will fallback to loading via os.Open / io.ReadFile if loading otherwise fails.