- the version of the docker image has been fixed to 4.2.3
- the packages to install has been updated
- an instruction in the vignette has been removed because of a bug (see issue #2)

* date is generated instead of fixed
* a TOC has been added
* example of "hydroriversSHP_to_graph" usage with a plot of the results

* Separated function for loading SHP file and then process the data.
* Outlet attribute added in the graph
* Use the HydroRiver "UPLAND_SKM" instead of "CATCH_SKM" to fix the patch sorting process

vignette fixes (data saved in Rds with format version 2 for better compatibility and suppress warnings)

Update vignettes/cantal-model.Rmd

See merge request !2