So what is the problem with sqlite?

Hello,
I am trying to learn Elixir by developing a web app and I wanted to use SQLite as my backend database. I don’t expect the users to exceed its limits any time soon so it would be a good starting point!
I landed on this post saying that the driver adapter needs some love to support Ecto 2.0, so I believe it would be an amazing opportunity to learn the language more in-depth and also support my use-case and others wanting to use SQLite.

Is there any procedure or best-practices on these kind of adapters, or should I just dive into one of the two existing repositories and try to make it work with Ecto 2.0 ?

Existing repos:

Any hint, tip and references would be awesome to help me start contributing to Elixir;p