added fourth_order to the package-level __init__.py

pavelkomarov · pavelkomarov · commit 2e68536bfc6a · 2025-07-01T18:56:44.000-07:00
diff --git a/pynumdiff/__init__.py b/pynumdiff/__init__.py
@@ -1,7 +1,7 @@
 """Import useful functions from all modules
 """
 from pynumdiff._version import __version__
-from pynumdiff.finite_difference import first_order, second_order
+from pynumdiff.finite_difference import first_order, second_order, fourth_order
 from pynumdiff.smooth_finite_difference import mediandiff, meandiff, gaussiandiff,\
     friedrichsdiff, butterdiff, splinediff
 from pynumdiff.total_variation_regularization import iterative_velocity, velocity,\
