There were two coordinate systems used:
- 0..512 (used in osu!stable)
- 0..1 (relative coordinate)
This commit replaces the usage of
the relative coordinate system to
the coordinate system of 0..512.
TRuleset was a mistake. This resulted in cases that checked whether the beatmap was for the current ruleset (TaikoBeatmapConverter and ManiaBeatmapConverter) failing due to TestXRuleset != XRuleset...