(SHA256) Update to the C~ 2.0 model.
(SHA256) Add a TestSha network.
(SHA) Update the code to Synflow v2.0
(SHA256) Updating SHA 256 to the v2.0 of the C-flow.
(SHA256) Updating SHA 256 to the v2.0 of the C-flow (testbench).
(SHA-256) Some corrections.
(SHA-256) Fix a bug.