Temporarily constrain napari version (#347)

* simplify conditional

* temporarily constrain napari version

Author: melonora

setup.cfg

@@ -41,7 +41,7 @@ install_requires =
     geopandas
     loguru
     matplotlib
-    napari>=0.4.19.post1
+    napari>=0.4.19.post1,<0.5.6
     napari-matplotlib
     numba
     numpy