[Suggestion] Support Touch Pad better

[finscn]

Middle-button of Mouse is very import in LDtk , but many macOS users (e.g me) love touch pad(Magic Trackpad). It's no middle button.

So I hope LDtk could support a short-cut key to simulate Middle-button of Mouse , example Alt(Option) + LeftClick .

I know two-fingers-press (not touch) could be used to simulate MiddleClick on Magic Trackpad . But when I do that , the LeftClick & MiddleClick will both be emitted (maybe a bug ?) , Then I could see this:

the left-top corner is wrong .

[TheOnlyMrCat]

In the level and world views, there seems to be no way to pan the screen touchpad-only. It would be great if touchpad scrolling would pan, and pinching would zoom.

[deepnight]

The pinch move should now work since 0.10-beta.