Filesizeview

**Full Changelog**: https://github.com/heiner/filesizeview/compare/v0.0.7...v0.0.8

Few features: `u`, `\t`, `\n` commands.

* Bugfix to support `/` as a final directory entry without creating an "empty filename" file.
* Adds `-i` flag to read from stdin, e.g.
sh
BLOCKSIZE=512 python filesizeview.py -i < du-output.txt

* Fix setuptools issue. `pip install filesizeview` should finally work.

* Fallback to built-in `du` on MacOS if `gdu` isn't installed.

Re-release of Martin's `filesizeview`.