v0.7.0 - HUGE performance improvements

The long awaited implementation using the Sieve of Erasthotenes is here. It's amazing how much faster this version is compared to the previous bruteforce method, the implementation is very very simple but still very powerful.

Performance comparison - Calculate all primes up to 1 million on a Ryzen 7 5800x
v0.6.1 - 55.7 seconds
v0.7.0 - 0.035 seconds LOL
Test it for yourself, the results are amazing.

Full Changelog: v0.6.1...v0.7.0