Add acrobatics to Minecraft.

Hello. Wow, I'm surprised... nobody thought to suggest what I'm about to 
mention xD

When I talk about acrobatics, I'm thinking of elytra loops. It's true! You 
can climb up in a chandelle, but the game forbids you from going on your back 
and then descending—a loop, basically! I don't remember if you can do twists.

But when I talk about acrobatics, I'm also thinking of parkour. Mojang, 
please, allow the placement of ladders on ceilings so we can hang from them 
by our arms. That would be awesome for adventure maps! :D We should also be
 able to do Tarzan swings with ropes or vines, or even chains.

If you ask me if I've played too much Tomb Raider, I'd say that might be the 
case! XD

Anyway, tell me what you think of this idea.