(Optional). Additional configuration settings
to be passed to the bot's POST requests. See the config
parameter from ?httr::POST for further details.
The request_config settings are very
useful for the advanced users who would like to control the
default timeouts and/or control the proxy used for http communication.
# NOT RUN {bot <- Bot(token = "TOKEN")
# In case you want to set a proxy (see ?httr:use_proxy)bot <- Bot(token = "TOKEN",
request_config = httr::use_proxy(...))
# }