bugfix

• bugfix: Filename contains cause copy failed.
• Add Type in anything to exit
• Other improvements.

Use more efficient copy method, show percentage while copying

• Use more efficient copy method. (Use Files.copy instead of FileChannel.transferTo)
• Show percentage while copying, like (83.3%) finished. Still copying..

Use function instead of objects.

The Java port won't be affected.

1.0.0

Basic available. Basic implemented functions described in README.