fix: rescale length, areas, vol dims and re-integrate degree in length

Author: percevalw

changelog.md

@@ -25,6 +25,7 @@
 - Improved support for multi-gpu gradient accumulation (only sync the gradients at the end of the accumulation), now controled by the optiona `sub_batch_size` argument of `TrainingData`.
 - Support again edsnlp without pytorch installed
 - We now test that edsnlp works without pytorch installed
+- Fix units and scales, ie 1l = 1dm3, 1ml = 1cm3
 
 ## v0.14.0 (2024-11-14)