0.7.0
- use 'sendfile' from 'simple-sendfile' in _copyFile and do read/write as a fallback only
- add isFileName, hasParentDir, hiddenFile to System.Posix.FilePath
- add our own openFd version for more control
- small documentation improvements
- add a getDirectoryContents' version that works on Fd
- lift version constraints in benchmark
- remove fpToString and userStringToFP, use Data.ByteString.UTF8 directly instead