Decode user input into unicode

Author name: Gąbal
...

Traceback (most recent call last):
...
  File "./nbconvert/converters/../templates/skeleton/tex/null.tplx", line 25, in top-level template code
    ((*- block header -*))
  File "./nbconvert/converters/../templates/tex/latex_sphinx_base.tplx", line 141, in block "header"
    \renewcommand{\releasename}{((( nb.metadata._draft.release | escape_tex )))}
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc4 in position 1: ordinal not in range(128)

nbconvert/utils/console.py

@@ -45,7 +45,7 b' def input(prompt_text):'
     if majorversion >= 3:
         return input(prompt_text) 
     else:
-        return raw_input(prompt_text)
+        return raw_input(prompt_text).decode(sys.stdin.encoding)
 
     
 def prompt_boolean(prompt, default=False):