Merge pull request #253 from Netolish/master

First support for STM32L0x family
Support for nucleo 411re.
jtag reset
gdb server fix, indentation
Merge pull request #257 from rene-dev/master

reset chip via JTAG
fix missing error msg when no suitable device is found
Merge pull request #258 from MartinNowak/master

fix missing error msg when no suitable device is found