AGStopwatch
AGStopwatch is built using TypeScript. It's just a basic stopwatch - you can start it,
stop it, restart it, and check how much time has elapsed.
Install using:
```
npm install agstopwatch
```
Use it in your code using:
Typescript:
```ts
import Stopwatch = require("agstopwatch");
```
JavaScript:
```js
var Stopwatch = require("agstopwatch");
```