add: client-side captcha
add: correct disco items answer
add: xmpppy debug
Merge branch 'master' of https://github.com/mrDoctorWho/vk4xmpp
fix: debug xmpppy with old config
del: timestamp in captcha
add: url in vcard
add: answer for jabber:iq:version
add: iq ping (xep-0199)
add: iq uptime (xep-0012)
fix: exception in client-side captcha
Merge pull request #12 from disabler/master

client-side captcha, disco#items, iq-ping  — all by @diSabler