This is... ridiculous, but it happend to be required by the
Bevy Parenting system. Without this, the Thinker will be randomly
removed from the hierarchy :(

Fixes: https://github.com/zkat/big-brain/issues/10

Fixes: https://github.com/zkat/big-brain/issues/13

Fixes: https://github.com/zkat/big-brain/issues/12

I *think* this fixes it, but I need to test it more
thoroughly and make sure everything is actually ok

Fixes: #7 

Fixes: https://github.com/zkat/big-brain/issues/4

Fixes: https://github.com/zkat/big-brain/issues/5

Fixes: https://github.com/zkat/big-brain/issues/3