Add support for fetching range of dates

src/utils/index.ts

@@ -0,0 +1,8 @@
+export const sleep = (ms: number) => new Promise(resolve => setTimeout(resolve, ms));
+
+export const gaussianRandom = (mean = 0, stddev = 1) => {
+  let u1 = Math.random();
+  let u2 = Math.random();
+  let z0 = Math.sqrt(-2.0 * Math.log(u1)) * Math.cos(2.0 * Math.PI * u2);
+  return z0 * stddev + mean;
+}