Amanobot

- Changed normal message's flavor to `normal`

- Moved all namedtuple-related stuff to a new module `telepot.namedtuple`. All calls to the function `telepot.namedtuple()` should be changed to `telepot.namedtuple.namedtuple()`
- Added a function `telepot.flavor()` to differentiate between a normal message and an inline query
- Added `flavor` parameter to `telepot.glance2()` to extract info according to message flavor
- `notifyOnMessage()` and `messageLoop()` can handle inline query as well as normal chat messages
- Added a few `per_XXX_id()` functions useful for spawning delegates for inline queries
- Added `UserHandler`
- `reply_markup` parameter can accept namedtuples `ReplyKeyboardMarkup`, `ReplyKeyboardHide`, `ForceReply` as values

- Added webhook interface
- Added `supergroup_chat_created`, `migrate_to_chat_id`, `migrate_from_chat_id`, and `channel_chat_created` fields to Message

- Added `openable()` class decorator
- Default `on_close()` prints out exception
- Async `SpeakerBot` and `DelegatorBot` constructor accepts `loop` parameter

- Revamped `Listener` and `ChatHandler` architecture
- Added `create_open()`

- Conforms to latest Telegram Bot API as of October 8, 2015
- Added `Chat` class, removed `GroupChat`
- Added `glance2()`