Revert "Merge remote-tracking branch 'origin/master'"

This reverts commit 8bfeb272d1a789f87391b6a77d4c5587106bb9ee, reversing
changes made to bbd44aaf7d4b2b7d2ad2b02857948dc395591b20.
Revert "added fancytree filtering (first draft)"

This reverts commit bbd44aaf7d4b2b7d2ad2b02857948dc395591b20.