* bin/ssh-import-id, ssh-import-id.1:
  - support key revocation through a -r|--revoke option
  - only revokes keys that we label as adding (starting with this release)
* debian/control, debian/rules, setup.py:
  - fix lintian warnings
  - clean up pypi pkginfo
releasing 3.5
opening 3.6
* setup.py:
  - fix pip install on Mac
releasing 3.6
opening 3.7
* bin/ssh-import-id-lp:
  - another fix for Mac OS X
releasing 3.7
opening 3.8
No change release; our Python and Debian/Ubuntu version numbers got
out of sync due to a bug in my release script
releasing 3.8
opening 3.9
* bin/ssh-import-id-lp:
  - ensure that URL is not None before using it
  - fixes exception when URL is not defined in config file and not in
    the environment
releasing 3.9
opening 3.10
* bin/ssh-import-id:
  - show key type in info messages
releasing 3.10
opening 3.11
* bin/ssh-import-id:
  - cleanup tempfiles left around in case we die() early