Bump ethash to 1.1.0

Author: SamWilsn

setup.cfg

@@ -191,7 +191,7 @@ doc =
 
 optimized =
     rust-pyspec-glue>=0.0.9,<0.1.0
-    ethash @ git+https://github.com/chfast/ethash.git@e08bd0fadb8785f7ccf1e2fb07b75f54fe47f92e
+    ethash>=1.1.0,<2
 
 [flake8]
 dictionaries=en_US,python,technical