Dragons Grow Up Redux

After 100 years, each of your dragon babies will grow into their full grown counterparts! This includes the Ether Drake hatchling AND the Sky Dragon hatchlings! If you want to change the amount of time it takes to grow, you can go to events/dragons_grow_up_events.txt and change the value of @dgu_grow_days to whatever length of time you want in days. I originally made a version of this mod a few years ago which only worked for the Ether Drake hatchling (and another mod author made another mod afterwards which worked on the Sky Dragon hatchlings by the same name - that one is still up, but idk if it works), but that broke after Stellaris updated. This should be very much future-proofed and should no longer break during any updates, unless something major changes, and includes the Sky Dragon hatchlings as well.