Add test for 1305: Incorrect lemmatization of VBZ for English

spacy/tests/regression/test_issue1305.py

@@ -0,0 +1,8 @@
+import pytest
+
+@pytest.mark.models('en')
+def test_issue1305(EN):
+    '''Test lemmatization of English VBZ'''
+    assert EN.vocab.morphology.lemmatizer('works', 'verb') == set(['work'])
+    doc = EN(u'This app works well')
+    assert doc[2].lemma_ == 'work'