remove scipy version restriction, get diffeqpy from pip

 - the former is not needed since the descriptastorus (which was incompatible with latest scipy and required this limitation) is no longer in the dep list
 - our diffeqpy is only on conda for convenience

Author: JacksonBurns

environment.yml

@@ -57,7 +57,7 @@ dependencies:
   - coverage
   - cython >=0.25.2
   - scikit-learn
-  - scipy <1.11
+  - scipy
   - numpy >=1.10.0
   - pydot
   - jinja2
@@ -75,6 +75,7 @@ dependencies:
   - pip
   - pip:
     - pytest-check
+    - diffeqpy
   - matplotlib >=1.5
   - mpmath
   - pandas
@@ -91,13 +92,6 @@ dependencies:
   - rmg::pyrms
   - rmg::symmetry
 
-# packages we would like to stop maintaining (and why)
-  - rmg::diffeqpy
-  # we should use the official verison https://github.com/SciML/diffeqpy),
-  # rather than ours (which is only made so that we can get it from conda)
-  # It is only on pip, so we will need to do something like:
-  # https://stackoverflow.com/a/35245610
-
 # conda mutex metapackage
   - nomkl