Improve Rewind as Undo

[SimonN]

Lix 0.10.4

Topic about Rewind as Undo on Lemmings Forums

The current option "Keep Replay after Rewinding" should change to: Keep the replay after rewinding iff we started with a replay and haven't interrupted it yet. When you choose this (undo your play, but browse loaded replays), Lix won't cut anything from the loaded replay when you framestep back. When you play yourself, Lix will discard all rewound actions from the replay immediately.

You can still interrupt a loaded replay by clicking air. You can continue your own attempt at the level from there. New: From this point on, Lix will discard rewound actions from the replay.