allow human middleware to specify a specific field to trigger
allow human middleware to specify a specific field to trigger

acrollet/botkit,howdyai/botkit,howdyai/botkit,samuelsan/YelpBot,dhulser/slack-reporting-bot,healthchatnow/hcn,DJ1K1/botkit,ouadie-lahdioui/botkit,EliKrumholz/botkit,howdyai/botkit,DJ1K1/botkit,howdyai/botkit