Escape each HTML ref individually.

tests/http_parser_test.py

@@ -31,3 +31,11 @@ def test_html_numeric_reference_parsing(entitydef):
     num = entitydef[2]
     parser = MatrixHtmlParser()
     assert parser.unescape('&#{};'.format(num)) == character
+
+
+def test_parsing_of_escaped_brackets():
+    p = MatrixHtmlParser()
+    p.feed('<pre><code>&lt;faketag&gt;</code></pre>')
+    s = p.get_substrings()
+    print(s)
+    assert s[0].text == '<faketag>' and len(s) == 1