lazer updates (and some hidden mechanics)

this update to lazer dives into some of the unreasonably complicated mechanics behind osu!. along with whatever else is in the changelog. try lazer for yourself: read the full changelog: lazer is the next major update to osu!. learn about it: 00:00 slider end leniency 02:25 floating point precision 03:06 spinner stuff 03:44 mania!!! but not mobile mania. 04:50 mrekk sets 3 1000pp plays in 7 seconds (and the rest of the changelog)