New threading model about fyne HOT 2 OPEN

Re-merge draw and event into one thread

This might be the easiest path, but it isn't necessarily the only one. We can keep them on separate threads as long as we have them lock when reading or writing state.

That being said, unless we need to work around platform issues (ie #2 on the checklist), merging them to one thread might be the way to go.

I'll also add another checklist item for removing all the now-unneeded locks/sync stuff throughout the codebase

from fyne.

Re-merge draw and event into one thread

This might be the easiest path, but it isn't necessarily the only one. We can keep them on separate threads as long as we have them lock when reading or writing state.

Yes, there could be locking based solutions - but part of this is trying to find the simplest solution, so reverting the thread split seems like a good start.

from fyne.