Code review comment for lp:mir/0.18

Hmm, it seems the new input code in 0.18 might be causing a lot of the new test failures, not to mention is annoying to use in practice (mouse acceleration too high). Maybe we should consider fixing that up before releasing...

https://bugs.launchpad.net/mir/+bugs?field.tag=pointer-events

It's possible that simply killing the acceleration that's been introduced will solve all of them at once.