* Add wifi.sta.clearconfig(). Adjust password validation to match 2.0.0 SDK rules (no min length enforced, i.e. for WEP)
* Updat comments about WEP key not having a minimum
* Documentation: add note about node.restore() to wifi.sta.clearconfig() docs, and add SDK verbiage to describe what node.restore() impacts.
* Normaliz if statements
* Convert leading tabs to leading spaces for consistency
- Stop fighting against the SDK in terms of owning/writing the init_data block.
NodeMCU included a default init_data block because originally the SDK did
not, but by now it's not needed.
- Expose a way to reconfigure the ADC mode from Lua land. With most people
using the cloud builder and not able to change the #define for byte 107
this has been a pain point.
- Less confusion about which init_data has been used. Lua code can now simply
state what mode it wants the ADC to be in, and not worry about the rest of
the init_data complexities such as the init_data changing location due to
flashing with wrong flash_size setting, or doing/not doing a chip-erase
before loading new NodeMCU firmware.