Add a default TSV reader in GEODE module

lib/python/GEODE/__init__.py

 from GEODE.Classification import discursiveFunctions
 from GEODE.Metadata import article, paragraph, fromKey, relativePath, toKey, uid
-from GEODE.store import corpus, Directory, SelfContained, toTSV
+from GEODE.store import corpus, Directory, fromTSV, SelfContained, toTSV
 from GEODE.Visualisation import heatmap

lib/python/GEODE/store/Corpus.py

 from GEODE.Metadata import fromKey, relativePath
-from GEODE.store.TSV import toTSV
+from GEODE.store.TSV import fromTSV, toTSV
 import pandas
 from os import makedirs
 from os.path import dirname, isdir
@@ -37,7 +37,7 @@ class TSVIndexed(Corpus):
 
     def load(self):
         if self.data is None:
-            self.data = pandas.read_csv(self.tsv_path, sep='\t')
+            self.data = fromTSV(self.tsv_path)
             self.detect_keys()
             self.data = self.data.set_index(self.keys, drop=False)
 

lib/python/GEODE/store/TSV.py

@@ -22,3 +22,6 @@ def toTSV(filePath, data, sortBy='toStrKey'):
     else:
         sortedData = data.sort_index(key=forPanda(data, sortBy))
     sortedData.to_csv(filePath, sep='\t', index=False)
+
+def fromTSV(filePath):
+    return pandas.read_csv(filePath, sep='\t')

lib/python/GEODE/store/__init__.py

 from GEODE.store.Corpus import corpus, Directory, SelfContained
-from GEODE.store.TSV import toTSV
+from GEODE.store.TSV import fromTSV, toTSV
 import os
 import os.path