Import fix.

pes_to_spec/test/offline_analysis.py

@@ -13,6 +13,7 @@ from pes_to_spec.model import Model, matching_ids
 
 # for helper plots
 from pes_to_spec.model import SelectRelevantLowResolution
+from pes_to_spec.model import HighResolutionSmoother
 from sklearn.decomposition import PCA
 
 from itertools import product