add groupdict function to triggers (#1061)

sopel/trigger.py

@@ -128,6 +128,10 @@ class Trigger(unicode):
     groups = property(lambda self: self._match.groups)
     """The ``groups`` function of the ``match`` attribute.
 
+    See Python :mod:`re` documentation for details."""
+    groupdict = property(lambda self: self._match.groupdict)
+    """The ``groupdict`` function of the ``match`` attribute.
+
     See Python :mod:`re` documentation for details."""
     args = property(lambda self: self._pretrigger.args)
     """

test/test_trigger.py

@@ -148,6 +148,7 @@ def test_intents_trigger(nick):
     assert trigger.match == fakematch
     assert trigger.group == fakematch.group
     assert trigger.groups == fakematch.groups
+    assert trigger.groupdict == fakematch.groupdict
     assert trigger.args == ['#Sopel', 'Hello, world']
     assert trigger.tags == {'intent': 'ACTION'}
     assert trigger.admin is True