fix minor typo in negotiated.py
actually hook up the unknown capability fallback
teach ibgp-check to send bogus capability 66; add test that uses it
update changelog
rename send-cap command in sequence script
Merge pull request #190 from wk/typo_fix

fix minor typo in negotiated.py
Merge pull request #191 from PowerDNS/unknowncap

Do not drop session when receiving an unknown capability