stretch algorithm
Merge remote-tracking branch 'upstream/master'

Conflicts:
	gcodeExport.cpp
	main.cpp
	settings.cpp
	settings.h
stretchDistance is no more initialized in main.cpp
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'

Conflicts:
	fffProcessor.h
	settings.h
Merge remote-tracking branch 'upstream/master'

Conflicts:
	fffProcessor.h
Change GCodePathConfig::setData signature to simplify merge
Merge remote-tracking branch 'upstream/master' into stretch
Merge upstream/master
Merge remote-tracking branch 'electrocbd/stretch' into Personal-Build