Did some project updates on github.com:ErwinRieger/ddprint:

* Some smaller code fixes and code cleanup.
* plot_mat_profile script: cleanup and improved display
    of material profiles.
* Documentation update (README):
    + Update section about auto-temp feature.
    + Added information in flowratesensor section.
    + Added flowratesensor details section.
    + Added information in material profile section, added some example plots.
    + Added example plots of material profiles.
    + Added more images.