PixelBasher minor update - Tapioca

This is a minor update with a few bugfixes and assets.

Bugfixes:

- Fixed an issue where the mirror view was still visible in image exports even after toggling it off.

- Fixed an issue where certain artifacts are shown around images in exports.

Small update regarding future plans.
As I mentioned earlier, I'm completely rewriting PixelBasher from scratch for the next version. I made some good progress on it recently. The undo system is pretty robust now, and we've got grid snapping that actually makes sense.

As you can see in this clip the next iteration will have brushes that work differently. Everything is based on loading files dynamically, so each brush can have the textures of it's components changed to preference.

Note: this is very early work,  but the fundamentals are there.  Also it's worth mentioning the first version of PixelBasher 3 might also not have all the effects available that V2 had. The focus is on getting the core right first.