Add secret handshake warmup
Improve tests so Aimee can't cheat.
Merge branch 'master' of https://github.com/JumpstartLab/warmup-exercises
Improve test case for invalid secret handshakes
Add Sieve of Eratosthenes warmup
stab at secret hand
Merge branch 'master' of https://github.com/JumpstartLab/warmup-exercises
silly sieve answer