Optimize cross-filesystem operations Adds a new function to that resolves a path through all underlying filesystems. Allows cross-file system operations to resolve to the final FS and call operations directly on that file system. Merge pull request #94 from agocke/optimize-fscross Optimize cross-filesystem operations Fix cross-filesystem operations in MountFileSystem Remove duplicated code Merge pull request #95 from GerardSmit/fix/mount-filesystem-crosscopy Fix cross-filesystem operations in MountFileSystem Added failing test for rooted path without volume on Windows xoofx/zio#92