Merge pull request #184 from KrisThielemans/xtensor_upgrade

remove xtensor version upper bound, set howardhinnant_date upper bound

Author: KrisThielemans

environment.yml

@@ -9,7 +9,7 @@ dependencies:
   - compilers
   - h5py>=3.7.0
   - hdf5>=1.12.1
-  - howardhinnant_date>=3.0.1
+  - howardhinnant_date>=3.0.1, <3.0.4
   - ipykernel>=6.19.2
   - just>=1.36.0
   - matplotlib
@@ -19,5 +19,5 @@ dependencies:
   - pre-commit=4.0.1
   - python>=3.11.3
   - shellcheck>=0.8.0
-  - xtensor>=0.24.2, <0.26.0
+  - xtensor>=0.24.2
   - xtensor-blas