I ran into a weird bug where installing the latest OP on a system that already has an installation from a version prior to commit [de26da3](https://gitweb.torproject.org/onionperf.git/commit/?id=de26da351d859b64a35b81eb2d07dbf325a86960) results in the following error message: ``` $ onionperf Traceback (most recent call last): File "/usr/local/bin/onionperf", line 4, in <module> __import__('pkg_resources').run_script('OnionPerf==0.2rc0', 'onionperf') File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 667, in run_script self.require(requires)[0].run_script(script_name, ns) File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 1452, in run_script raise ResolutionError( pkg_resources.ResolutionError: Script 'scripts/onionperf' not found in metadata at None ``` It looks like `setuptools` is renaming the OnionPerf version from `0.2.pre` (as it is currently specified in `setup.py`) to `0.2rc0` when installing, and they somehow conflict. I've tested this can be solved by bumping the version to 0.3 in `setup.py` (patch attached).