[WorldPainter script]: Fixify

This is a script for WorldPainter it will remove one by one holes and pillars from the terrain.

Youtube tutorial: https://youtu.be/UCTUhZu2o2E

Update version 1.1: added relaxed hole selection and an option to remove 1x2 holes as well.

To run the script open your world in worldpainter, go to Tools -> run script... and select the script.

The parameters can remain empty. you can use them to specify a mask if you don't want the pillars and holes to be removed everywhere.
The masking is the same as for slabify: https://youtu.be/d7rEcpH_YLw
If you put help in the parameters, it will give some examples of the syntax for masking.

This is better than smoothing the terrain since it will only remove the holes and smoothing can even introduce new holes.