Message reply and card support

[philipsd6]

With these changes, you can send a message to a room, get the message id from the response, and add a reply and attach a card, all nice and contained. For example:

my_room = hc.get_room('Test Room')
resp = my_room.message('Check this out @all!')
my_room.reply("You can add cards with HypChat!", resp['id'])
my_room.notification('This is a fallback message', card=my_fancy_card_dict, attach_to=resp['id'])

The card will slide right on top of the reply, attached to the first message!

Constructing my_fancy_card_dict is left as an exercise for the reader, but reading Sending Messages Using Cards should help.

[hanks]

nice

[hanks]

I tried this code, and if attach_to is None, there will be error like below:

hypchat.requests.HttpBadRequest: {
  "error": {
    "code": 400,
    "description": "Value {value!r} is not of type {expected_type!r}",
    "expected_type": "string",
    "field": "attach_to",
    "message": "Value None for field 'attach_to' is not of type 'string'",
    "type": "Bad Request",
    "validation": "type",
    "value": null
  }

Seems to use None check will be better:

if card:
    data['card'] = card
if attach_to:
    data['attach_to'] = attach_to