Detect OS in Makefile to use the correct avrdude.conf path
Woops, fix logic
Merge github.com:ErikZalm/Marlin into Marlin_v1
Report temperatures for all extruders
Add Panelolu2 pins for RAMPS1.3
Update French translation in language.h
Add support of LiquidTWI2-based panels to Makefile
Use -fno-use-cxa-atexit to override gcc --enable-cxa_atexit