How to "activate" URLs/deeplinks for my simple Ionic project?

I have a simple Ionic project where I have some tabs and in these tabs there are lists of things that link to other lists that link to detail pages. I am not using lazy loading yet.

When developing I often am on a deep page “inside” my app. If I change a file and save my changes, it reloads the whole app on the start page.

I remember that in Ionic v1 this was not the case - the URL referenced the page I was on and also included the ID - and I could handle a reload on that URL to load all the data necessary.

What is the correct and easiest way for an Ionic 2+ project to get that functionality back?
How do I “activate” deeplinks for project?