Autocomplete inherited methods when overriding in child class. Fixes #458.

test/blabla_test_documentation.py

@@ -0,0 +1,30 @@
+# todo probably remove test_integration_keyword
+
+def test_keyword_doc():
+    r = list(Script("or", 1, 1).goto_definitions())
+    assert len(r) == 1
+    assert len(r[0].doc) > 100
+
+    r = list(Script("asfdasfd", 1, 1).goto_definitions())
+    assert len(r) == 0
+
+    k = Script("fro").completions()[0]
+    imp_start = '\nThe ``import'
+    assert k.raw_doc.startswith(imp_start)
+    assert k.doc.startswith(imp_start)
+
+
+def test_blablabla():
+    defs = Script("import").goto_definitions()
+    assert len(defs) == 1 and [1 for d in defs if d.doc]
+    # unrelated to #44
+
+
+def test_operator_doc(self):
+    r = list(Script("a == b", 1, 3).goto_definitions())
+    assert len(r) == 1
+    assert len(r[0].doc) > 100
+
+def test_lambda():
+    defs = Script('lambda x: x', column=0).goto_definitions()
+    assert [d.type for d in defs] == ['keyword']