Added Speed parameter, only outputs changing G-code

Signed-off-by: Roland Bosa <roland.bosa@gmail.com>
Now ignoring output data.txt file

Signed-off-by: Roland Bosa <roland.bosa@gmail.com>
Regenerated elevation pics

Previous ones were generated from faulty datasets...

Signed-off-by: Roland Bosa <roland.bosa@gmail.com>