Merge pull request #269 from Jhsmit/symfit_version

bump symfit version requirement

Author: Jhsmit

setup.cfg

@@ -27,8 +27,7 @@ install_requires =
     pandas
     scikit-image
     scipy
-    symfit
-    sympy==1.5.1
+    symfit>=0.5.5
     torch
     tqdm
     typer