Don't use the fast parser at the moment. It's more important for now to even get a parser working.

test/test_new_parser.py

@@ -21,3 +21,4 @@ def test_basic_parsing():
     compare('\na #pass\n')
     compare('wblabla* 1\t\n')
     compare('def x(a, b:3): pass\n')
+    compare('assert foo\n')