diff --git a/LICENSE.txt b/LICENSE.txt
index 318870ade..50ebcc3d8 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2014-2018 OpenWorm
+Copyright (c) 2014-2019 OpenWorm
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in
diff --git a/PyOpenWorm/data_trans/data_with_evidence_ds.py b/PyOpenWorm/data_trans/data_with_evidence_ds.py
index 207476b85..923114971 100644
--- a/PyOpenWorm/data_trans/data_with_evidence_ds.py
+++ b/PyOpenWorm/data_trans/data_with_evidence_ds.py
@@ -38,17 +38,14 @@ def __init__(self, *args, **kwargs):
         self.__ad_hoc_contexts = dict()
 
         self.data_context = _DataContext.contextualize(self.context)(maker=self,
-                                                                     imported=(CONTEXT,),
-                                                                     conf=self.conf)
+                                                                     imported=(CONTEXT,))
 
         self.evidence_context = _EvidenceContext.contextualize(self.context)(maker=self,
-                                                                             imported=(CONTEXT,),
-                                                                             conf=self.conf)
+                                                                             imported=(CONTEXT,))
 
         self.combined_context = _CombinedContext.contextualize(self.context)(maker=self,
                                                                              imported=(self.data_context,
-                                                                                       self.evidence_context),
-                                                                             conf=self.conf)
+                                                                                       self.evidence_context))
 
     def data_context_for(self, **kwargs):
         ctx = self.context_for(**kwargs)
@@ -67,16 +64,14 @@ def context_for(self, **kwargs):
     def commit_augment(self):
         saved_contexts = set([])
         self.data_context.save_context(inline_imports=True, saved_contexts=saved_contexts)
-        # self.data_context.save_imports()
         self.evidence_context.save_context(inline_imports=True, saved_contexts=saved_contexts)
-        # self.evidence_context.save_imports()
-        print(self.combined_context)
         self.combined_context.save_imports()
 
 
 class _SContext(Context):
     def __init__(self, maker, **kwargs):
-        super(_SContext, self).__init__(**kwargs)
+        conf = kwargs.pop('conf', maker.conf)
+        super(_SContext, self).__init__(conf=conf, **kwargs)
         self.maker = maker
 
     @property
diff --git a/PyOpenWorm/data_trans/excel_ds.py b/PyOpenWorm/data_trans/excel_ds.py
index bae1da3d9..067719c3e 100644
--- a/PyOpenWorm/data_trans/excel_ds.py
+++ b/PyOpenWorm/data_trans/excel_ds.py
@@ -7,6 +7,5 @@
 class XLSXHTTPFileDataSource(HTTPFileDataSource):
     rdf_namespace = Namespace(DS_NS['XLSXHTTPFileDataSource#'])
 
-    # column_headers = Informational(display_name='Header column names', multiple=False)
 
-    # csv_field_delimiter = Informational(display_name='Field delimiter')
+__yarom_mapped_classes__ = (XLSXHTTPFileDataSource,)
diff --git a/PyOpenWorm/data_trans/sci_rna_seq.py b/PyOpenWorm/data_trans/sci_rna_seq.py
index 245967dee..24fccbeed 100644
--- a/PyOpenWorm/data_trans/sci_rna_seq.py
+++ b/PyOpenWorm/data_trans/sci_rna_seq.py
@@ -1,5 +1,3 @@
-#!/home/ubuntu/env/bin/python
-
 from rpy2.robjects.packages import importr
 from rpy2.robjects import r as R
 from PyOpenWorm.datasource import DataTranslator, DataSource, Informational