Upgrade to release 0.3.3 and add runtime dependencies:
- Keccak backend was initialized every time it was called.
Now it's initialized only the first time it's called.
- Prune venv files from the release via MANIFEST.in
Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
