import { regroupBits } from "https://deno.land/x/libauth@v2.0.0-alpha.9/src/lib/address/bech32.ts";
Given an array of integers, regroup bits from sourceWordLength to
resultWordLength, returning a new array of integers between 0 and
toWordLength^2.
Note, if bin is within the range of sourceWordLength and padding is
true, this method will never error.
A.K.A. convertbits