When the output file is `-` use `write` instead of `print`

[cipriancraciun]

If one uses --output -, the current ashes code uses print(output_text) which writes the representation of the bytes in Python syntax (i.e. b'<...\t\t...') as opposed to the actual text.

Instead of print(output_text) one could use sys.stdout.write(output_bytes).

The following simple patch solves this issue:

@@ -2664,21 +2664,21 @@ def _simple_render(template_path, template_literal, env_path_list,
         raise CLIError('expected model or model literal')
     elif model_path == '-':
         model = json.load(sys.stdin)
     else:
         with open(model_path) as f:
             model = json.load(f)
 
     output_text = tmpl_obj.render(model)
     output_bytes = output_text.encode(output_encoding)
     if output_path == '-':
-        print(output_bytes)
+        sys.stdout.write(output_text)
     else:
         with open(output_path, 'wb') as f:
             f.write(output_bytes)
     return
 
 
 def main():
     # using optparse for backwards compat with 2.6 (and earlier, maybe)
     from optparse import OptionParser