Latest Espruino build for Esp8266

back :)

from what I could read in the esptool repo:

• flash_mode: when using "dio" instead of "qio", GPIO 9& 10 are freed & available for other purposes
  
• flash_size: the value of my flash chip is not in the 2m..32m range, so not a valid value [ yet* ]
  
• flash_freq: clock freq for SPI interaction, 20..80MHz - not related to esp cpu freq ^^
  
  

*I'll digg esptool.py, but the lines 46..56 ( "add_spi_flash_subparsers" ) & 825..852 ( "write_flash" ) seems of interest, as well as the following links: https://github.com/themadinventor/esptool/issues/105 , from a coment in previous link's page - spi_flash.h

lastly, from the esp8266 datasheet:

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