do not permit 'flash' command if the firmware was not built
fix wrong partition sizes in some cases
Updated OTA module
allow setting boot partition also for ota types
float values accepted in duty function
Updated RTC module
improved smpt functions
Updated utime module
added utime.ticks_base() function
Added -fno-stack-protector in mpy-cross Makefile to address issues on some operating systems
Updated utime module
Added prebuilt firmware with all modules enabled (for psRAM boards)
Updated esp-idf to the latest commit
Updated Xtenssa toolchains to version 1.22.0-80-g6c4433a-5.2.0