Fix: Python 3.5 don't support re.match.__getitem__ (#131)

https://docs.python.org/3/library/re.html#re.match.__getitem__
It's shorthand for match.group(0) - 0 is the default if not supplied so you can omit that too.

Author: Semihal

testrail/helper.py

@@ -80,5 +80,5 @@ def __getitem__(self, index):
 
 def custom_methods(content):
     matches = [custom_methods_re.match(method) for method in content]
-    return dict({match[1]: match[0] for match in matches if match})
+    return dict({match.group(1): match.group(0) for match in matches if match})