[Backport] 1.13 Bubble Columns for 1.12

This mod emulates the bubble columns introduced in the 1.13 version.

How does it work? The mod replaces the soulsand and the magma block with custom ones that place the bubbles, but don't worry they will continue to be the blocks you know and love so much.

They have the same properties of the vanilla ones(speaking of speed and how the player moves), which i found in the vanilla code.

It works with every kind of entity, including dropped items and mobs. 

Here is a little showcase:

Also feel free to donate, I'm a student so I don't have much time... it would boost me a lot, thank you.

If you find any bugs send them to me through the "Issues" page.

Otherwise you can contact me on discord: xFra#3790

Credits for the project image:

Nate#8949

aka

futurenp