Obfsproxy TBB should list obfsproxy version in Vidalia's About page
Vidalia's About page lists the version numbers for Vidalia, Tor, and even Qt, but not obfsproxy. Might be useful to have obfsproxy's version number there, too. Maybe the Qt version number could go away then, because Tor/Vidalia users don't really care about that, do they?
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