[tor-bugs] #34352 [Metrics/Onionperf]: Bump OP version in setup.py

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#34352: Bump OP version in setup.py
-----------------------------------+--------------------------
     Reporter:  acute              |      Owner:  metrics-team
         Type:  defect             |     Status:  new
     Priority:  Medium             |  Milestone:
    Component:  Metrics/Onionperf  |    Version:
     Severity:  Normal             |   Keywords:
Actual Points:                     |  Parent ID:
       Points:                     |   Reviewer:
      Sponsor:                     |
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 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
 [https://gitweb.torproject.org/onionperf.git/commit/?id=de26da351d859b64a35b81eb2d07dbf325a86960
 de26da3] 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).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/34352>
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