A collection of ideas or improvements for Deluge 2.0 release process:

 * Streamline and automate the process further.
 * git archive should produce a pristine tar so no need to modify contents.
 * Change to use just sha256sum for file hash verification.
 * Reduce number of tarballs provided, so either drop gzip or bzip2 (or both).
 * Rename lzma tarball to xz.
 * Verify WebUI js files are all included.