Elder.js Hook: request

This hook gives access to the entire state of a request lifecycle before it starts.

• Primarily used to set 'request' specific data that is required by all routes so doesn't make sense to share across multiple 'data' functions.
• If you have helper functions that need a closure isolated to a specific page generation lifecycle here is where you should attach them.
• If you need to programmatically change the route, you can do so here. This is how the elderjs-plugin-random works.
• This hook is commonly uses by plugins that need to add route level data that is dependent on the request to populate.