why: This is a fork of SeExpr for krita. Its more than just a rebrand. All the code has been reformatted to c++14 as well as dropping the python bindings and pthread. It LLVM optional evaluator now has feature parity with the interpreter. These where there main points for the release. This only requires qt and c++14 compatible compiler. There is a complete changelog at the bottom of the release page.
As to why I want it. Its a really powerful scripting language that is embed into Krita. For example if I need to put a wood texture in. It can do it with a sample texture, but doesn't look obliviously over repetitive. Which is really useful with Commics and Animation.
Open Source: GPL3