Use ordered dict for storing glyphs.

pixelocr/glyphdb.py

@@ -15,6 +15,7 @@
 
 
 import pickle
+from collections import OrderedDict
 from os import path
 
 
@@ -25,7 +26,7 @@ class GlyphDB(object):
             with open(self.filename, 'rb') as fileobj:
                 self.data = pickle.load(fileobj)
         else:
-            self.data = {}
+            self.data = OrderedDict()
 
     def __getitem__(self, key):
         return self.data.__getitem__(key)