Fix the regexs in the python code here to be raw strings. (#414)

Otherwise we can get SyntaxWarnings on modern versions of
Python.

Signed-off-by: Chris Lalancette <[email protected]>

Author: clalancette

docutils_transforms_reps.py

@@ -113,7 +113,7 @@ def apply(self):
             elif name in ('replaces', 'replaced-by', 'requires'):
                 newbody = []
                 space = nodes.Text(' ')
-                for refrep in re.split(',?\s+', body.astext()):
+                for refrep in re.split(r',?\s+', body.astext()):
                     repno = int(refrep)
                     newbody.append(nodes.reference(
                         refrep, refrep,

rep0/rep.py

@@ -229,7 +229,7 @@ def _parse_author(self, data):
         author_list = []
         for regex in (angled, paren, simple):
             # Watch out for commas separating multiple names.
-            regex += u'(,\s*)?'
+            regex += r'(,\s*)?'
             for match in re.finditer(regex, data):
                 # Watch out for suffixes like 'Jr.' when they are
                 # comma-separated from the name and thus cause issues when