speed up `prime(n)`#102

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oscardssmith wants to merge 6 commits intomainfrom

oscardssmith-faster-prime

Commits on Dec 10, 2021

Commits on Dec 19, 2021

revet `Vector{Bool}` to `BitArray`
oscardssmith
authored

Commits on Dec 22, 2021

Commits on Dec 24, 2021

better perf
oscardssmith
committed