fix spec

Author: pipermerriam

tests/conftest.py

@@ -16,7 +16,7 @@ def contracts_dir(tmpdir):
 @pytest.fixture()
 def supported_solc_version():
     solc_version = get_solc_version()
-    if solc_version not in Spec('>=0.4.1,<=0.4.13,!=0.4.10,!=0.4.3,!=0.4.4,!=0.4.5'):
+    if solc_version not in Spec('>=0.4.1,<=0.4.16,!=0.4.10,!=0.4.3,!=0.4.4,!=0.4.5'):
         raise AssertionError("Unsupported compiler version: {0}".format(solc_version))
 
     return solc_version