v0.3 Bi-directional streaming support

ArduinoJson minimum of version 5.13.1 is recommended.
ESP8266 Core SDK must be at least 2.4.1.

v0.2 Uses external ArduinoJson

#296

v0.1

Repo as of Nov 2017, tagged to have a point of reference with new releases moving forward.

v0.4rc

Merge pull request #356 from kotl/master

Update suggested versions and manually merge connection error check