Shrink and Grow!

You can now use Shrink Cores and Grow Cores to shrink and grow, respectively! Use Base Cores to return to normal size, and various Time Cores can be used to speed up or even stop time!

Note: before you start your world, there is a new gamerule: changeSpeedWithSize. make sure it's set how you want. turning it on works better for bigger sizes, but turning it off works better for smaller ones.

And yeah, I know I haven't posted a mod in a while, this isn't a revival or something, it's just for fun.