when too much data has been sent to the text list view, way too much
GUI processing is done, let's batch-process the changes and then tell
the GUI that something has changed

(no more event selector)

just "dirty"

This reverts commit 4911b107.

The idea was to keep the stuff in the git history.

used to debug locking

first version, to be finished

introducing generic "view" with two instantiations: stdout and textlist

plus there is a default now

skip unknown messages safely)