3.0-master_20190907

Highlights

• SDK upgraded from 2.2.1 to 3.0

Breaking changes

• ds18b20 C module removed, use the Lua module of the same name which requires the one-wire C module, #2492
• EUS HTTP API changed, #2810
• node.info() delivers much more information which is selected with a new, optional parameter.
  (https://nodemcu.readthedocs.io/en/latest/modules/node/#nodeinfo), #2830

New modules

• Lua module for coroutine, #2851
• PWM2 module, #2747

Noteworthy enhancements

• I2C with multiple buses, #2465

Bug fixes

• various minor bug fixes; see milestone for details

Deprecation

• node.info() parameter-less Interface will be removed. (https://nodemcu.readthedocs.io/en/latest/modules/node/#nodeinfo), #2830