Input replay improvements and time limit tweaks

I just uploaded an improved build with some bugfixes that greatly improve the accuracy of the input replays; I'm still occasionally seeing very small positional inaccuracies from collisions, but I haven't seen them accumulate enough to have any frustrating effects in this updated build. That's certainly still a possibility so I'm going to keep looking for ways to improve it, but it seems much, much better now!

I also increased the time limit on the 3rd and 7th levels. I think in the future I'll add a difficulty option that affects time limits so that people of different first person platformer skill levels can all be engaged.