serial over usb
working sd over spi
advanced shell over usb
new shell over serial
new shell
cleanup
deleted submodule
demos readme
license
Stazeni zmen od Mariana.

Merge remote-tracking branch 'upstream/master'

Conflicts:
	demos/STM32F103-sdcard-fat/build/ch.bin
	demos/STM32F103-sdcard-fat/build/ch.dmp
	demos/STM32F103-sdcard-fat/build/ch.elf
	demos/STM32F103-sdcard-fat/build/ch.hex
	demos/STM32F103-sdcard-fat/build/ch.map
modifikace demo kodu na STM32F107
Pridani dema pro stm32f107