Accept pathlib paths across the board

This is an issue in preparation for a patch I will be trying to make.

I want to update Bottle to accept pathlib.Path paths across the board. My plan is to do this in a backwards COMPATIBLE way by adding something like str(inputfile) so that if you pass a native string or unicode, nothing happens but if you pass a pathlib object, it gets converted.

First question: Does this plan make sense? I use this in my tools so that I don't have to think about what is passed and it is explicitly converted

Second question: Where should I be looking? I think the goal should be as much coverage as possible but I would take better over perfect*. Off the top of my head:

• lookup paths for SimpleTemplate
• Upload handling
• (maybe) config options

Anywhere else?

Other thoughts?

*It took the python standard library a few major versions to transition too.