Move the stdlib executions into a plugin

jedi/plugins/stdlib.py

@@ -0,0 +1,18 @@
+from jedi import debug
+from jedi.plugins.base import BasePlugin
+
+
+class StdlibPlugin(BasePlugin):
+    def execute(self, callback):
+        def wrapper(context, arguments):
+            debug.dbg('execute: %s %s', context, arguments)
+            from jedi.evaluate import stdlib
+            try:
+                # Some stdlib functions like super(), namedtuple(), etc. have been
+                # hard-coded in Jedi to support them.
+                return stdlib.execute(self._evaluator, context, arguments)
+            except stdlib.NotInStdLib:
+                pass
+            return callback(context, arguments)
+
+        return wrapper