Fix oct23 repair encoding line in output file (#24)

* improving extension module vocola_ext_stringqh.py (string functions)
* switch off the shift trick for send_keys. Seems to have no effect any more.
* include "coding: latin-1" in output of Vocola

src/vocola2/exec/vcl2py/emit.py

@@ -676,7 +676,7 @@ def emit_file_header():
 
     now = strftime("%a %b %d %H:%M:%S %Y", localtime())
     OUT.append("# Natlink macro definitions for NaturallySpeaking\n")
-    # OUT.append("# coding: latin-1\n")
+    OUT.append("# coding: latin-1\n")
     OUT.append("# Generated by vcl2py " + VocolaVersion + ", " + now + "\n")
     OUT.append('''
 import natlink