Make lib more "modern"

[PapiOphidian]

This PR changes a bit, but nothing breaking as far as I can tell.

Change log:

• Update dependencies to be more "modern".
• include package-lock.json.
• Add JSDoc comments.
• Tell my editor to shut up about some logic.
• Add TypeScript as a dev dep so that it may generate .d.ts files automatically. (basically necessary for typescript users)
• Use some modern syntax such as for of verses for let and const/let initializers instead of var which is discouraged.
• Move the regex in WAV to the global scope to avoid recompilation of the regex for each function call.

If this ends up breaking compatibility with the target node version/web browsers then I'll see about remedying that.

How babel works now is that it must use the @babel/plugin-env node module in tandem with a browserlist to target specific browsers which I have included the oldest not dead browsers.

How gulp works now is that instead of telling gulp which tasks need to complete before other tasks in an Array in the task call, gulp wants you to use another function which accepts an Array of tasks that run sequentially. This cannot be spread across multiple files as far as I can tell without importing it when they export their own functions which was pretty useless in this case, so I have merged the files and the default task is now the browserify task.

The prepublish script now also generates .d.ts files