add extractors to init

src/graphnet/data/extractors/icecube/__init__.py

@@ -18,3 +18,8 @@
 from .i3pisaextractor import I3PISAExtractor
 from .i3ntmuonlabelsextractor import I3NTMuonLabelExtractor
 from .i3quesoextractor import I3QUESOExtractor
+from .i3dictvalueextractor import I3DictValueExtractor
+from .i3filtermapextractor import I3FilterMapExtractor
+from .i3mclabeler import I3MCLabelerExtractor
+from .i3highesteparticleextractor import I3HighestEparticleExtractor
+from .i3totaleextractor import I3TotalEExtractor

src/graphnet/data/extractors/icecube/i3highesteparticleextractor.py

@@ -9,7 +9,7 @@
 import numpy as np
 
 
-class HigestEparticleExtractor(I3Extractor):
+class I3HighestEparticleExtractor(I3Extractor):
     """Extract the highest energy particle in the event."""
 
     def __init__(