remove noisy array wrappings

[humanchimp]

right now the API is a big ugly:

k.tell('square', [4], log)

I'd like to remove the unnecessary boxing wherever we can.

[humanchimp]

Accidentally closed. Reopened.

[humanchimp]

This is still a thing

[humanchimp]

Talked about this with @fatih. Seems there are a couple options.

• overload tell to take either an array of parameters, or a single parameter that is wrapped in an array, e.g.:
  • kite.tell('square', 4, log)
  • kite.tell('square', 4).then(log)
  • kite.tell('pow', [4, 2], log)
  • kite.tell('pow', [4, 2]).then(log)
• disallow passing callbacks to the promised api, e.g.:
  • kite.tell('square', 4).then(log)
  • kite.tell('pow', 4, 2).then(log)
  • kite.tell('square', 4, log) - WRONG
  • kite.tell('pow', 4, 2, log) - WRONG