Notable changes:
- Add AIX support
- Add zipfs, an archive/zip-based read-only filesystem
- Add an optional interface for Symlink and Readlink
Other enhancements:
- TempFile support for wildcards instead of only prefixes
- Implement sftpfs.OpenFile method
- Add support for os.O_EXCL in MemMapFs
Bugfixes:
- Fixed the mem.File implementation to respect the io.ReaderAt contract by storing the original offset before the Read and restoring the offset after the Read.
- Return closed error in mem.File.Write() after mem.File.Close() has been called
- Add missing error check in RegexpFs.Open()