[$] An update on the input stack

The input stack for Linux is an essential part of interacting with oursystems, but it is also an area that is lacking in terms of developers.There has been progress over the last few years, however; Peter Huttererfrom Red Hat came to the 2019 X.Org Developers Conference to talk about some of the work that has been done. He gave a status report on the inputstack that covered development work that is going on now as well as thingsthat have been completed in the last two years or so. Overall, things arelooking pretty good for input on Linux, though the "bus factor" for thestack is alarmingly low.