Node.js Telegram Bot API Files

Added:

1. Support Bot API v3.5: (by @GochoMugo)
   • Allow provider_data parameter in TelegramBot#sendInvoice
   • Add method TelegramBot#sendMediaGroup()
2. Support Bot API v3.4: (by @kamikazechaser)
   • Add methods TelegramBot#editMessageLiveLocation, TelegramBot#stopMessageLiveLocation (#439)
   • Add methods TelegramBot#setChatStickerSet, TelegramBot#deleteChatStickerSet (#440)
3. Add methods:
   • TelegramBot#getFileStream (#442) (by @GochoMugo, requested-by @Xaqron)
4. Add options to TelegramBot#stopPolling() (by @GochoMugo)
5. Add metadata argument in message event (and friends e.g. text, audio, etc.) (#409) (by @jlsjonas, @GochoMugo)
6. Add forward-compatibility i.e. support future additional Telegram options (by @GochoMugo)
7. Add support for Node.js v9 (by @GochoMugo)
8. Document TelegramBot.errors, TelegramBot.messageTypes (by @GochoMugo)

Changed:

1. Update TelegramBot#answerCallbackQuery() signature (by @GochoMugo)
2. Improve default error logging of polling_error and webhook_error (#377)
3. Update dependencies

Deprecated:

1. Sending files: (See [usage guide][usage-sending-files]) (by @hufan-akari, @GochoMugo)
   • Error will not be thrown if Buffer is used and file-type could not be detected.
   • Filename will not be set to data.${ext} if Buffer is used
   • Content type will not default to null or undefined

Fixed:

1. Fix the offset infinite loop bug (#265, [#36]) (by @GochoMugo)
2. Fix game example (#449, [#418]) (by @MCSH)