Release 18

Many changes, see commit log for details.

This release primarily adds support for led pixels (WS2812b, AP106 etc.) and it fixes an issue where the firmware would not run in "plain" mode (i.e. not "OTA flash") (kept resetting).

For the plain image, you may need 1 Mbyte of flash now, but it may also work on a smaller flash size of 512 kbyte, because the code does fit in it, I can't test it though, please report.

The "ota" image is for the "over the air" upgradable image, but it needs at least 2 Mbyte (16 Mbit) of flash. It needs to be flashed using esptool initially, though.

The "plain" image is for and "esptool.py" etc. flashable image.

The documentation is outdated. For questions please refer to this thread: https://www.esp8266.com/viewtopic.php?f=6&t=3959