[bot] Added trigger.is_privmsg flag
[bot] Added trigger.is_privmsg flag

This flag will make it easier to determine in a message is from a private message or otherwise.

Signed-off-by: Eldon McGuinness <72efda08c2f0d836ef71a57e0dacb5875c45b8bd@gmail.com>

Uname-a/knife_scraper,Uname-a/knife_scraper,Uname-a/knife_scraper