Update azerbaijani.yml (#44)

Part of Fixes #14 

Added Latin Schwa (ə U+0259 and Ə U+018F) as a presumed mistype of the Cyrillic Schwa

scriptshifter/tables/data/azerbaijani.yml

@@ -61,3 +61,5 @@ script_to_roman:
     "\u04B9": "j"
     "\u042B": "Y"
     "\u044B": "y"
+    "\u0259": "a\u0306"
+    "\u018F": "A\u0306"