Cache results from getUsernameHistory

[Regalijan]

Easiest way to test (requires computer that isn't garbage, and don't let it run too long)

const noblox = require("noblox.js");

(async function () {
  while (true) {
    console.log(await noblox.getUsernameHistory(53264334));
  }
})();

Right now it's set to a day (for the combined user id, sort order, limit, and cursor) but I am open to changing it.