I cannot build this because it says that BLI_bvhtree_overlap_ex is declared twice:

Looking over the patch, note that am getting asserts / crashes w/ initial stress test:

Try scrubbing the playhead, increase the threshold to 0.2 makes it crash more often.

Regarding the icons sheet - it's more and more crowded and messy. There're some free slots here and there, but we slowly run out of free space. It's obvious, that the sheet must be reorganised or - more likely - we need brand new icon's storing system. I'd go for individual file per icon.

@Andrzej Ambroz (jendrzych) Agreed. The whole concept of an icon sheet is always likely to cause a mess, because the number of icons don't necessarily fit neatly into a series of rows and columns. Let's make a technical design task for this, so we can explore the best solution. For now, you'll just have to keep adding icons to the sheet, even though it's going to be messy.

amazing addition! Any chance of interior face removal?

in addition. I think w/ smart enough merge it could be quite useful for cutting implied geometry into something.
For example if a mesh cut had a solidify on it just small enough it could heal just to be just the cut area with the implied edge remaining live.

or what about at least having the part that dissolves faces on a checkbox in the mod?