Update requirements

Author: srittau

requirements.txt

@@ -1,2 +1,3 @@
-mypy==0.620
-wheel==0.31.1
+mypy==0.670
+typed-ast==1.3.1
+wheel==0.33.1

setup.py

@@ -19,7 +19,7 @@ def read(fname):
     packages=["asserts"],
     package_data={"asserts": ["py.typed", "*.pyi"]},
     python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
-    tests_require=["mypy >= 0.620"],
+    tests_require=["mypy >= 0.670"],
     license="MIT",
     classifiers=[
         "Development Status :: 3 - Alpha",