A5 version has Leveling Up system added

Now in the A5 version I've added a simple system for leveling up characters. I still consider it unnecessary, I think advancement can be done narratively and through adding equipment/items. But, I can also appreciate a leveling up system. It just took for me to sit with how I wanted it to work, then I had the ideas that make sense for me for this game. I think there's a lot of variation on how leveling up could work for this simple ruleset, hopefully what I've included will just be a starting point.