Prefer :rsa-general key algorithm since :rsa-sign and :rsa-encrypt are deprecated.
Import some generate functions in the top level ns.
Refactor lots of encryption data packet functions.
Minor tweak to enc-builder args.
Create dev source tree and move fuzz tool there.
Move fuzz to tool src tree and change to use core.async.
Various adjustments to the encryption and signing tests.
Memoize key-generation function for tests. Migrate signatures back to clojure.test.