Re-add class shutter with tweaks. (#1947)
We want to hide default-package classes, such as "com", "io", etc. which are common names
in Mojang obf classes but also common package names, without hiding generated default-package
classes such as described in #1895.
This reverts commit 6008fe73 (c4074717 by wizjany)
Compilation error: :worldedit-core:doctools:compileKotlin (new); gradle exception (new); artifacts size 0 B is 1 B less than the provided threshold 1 B (new)
