2018-2019 pp changes

[Francesco149]

don't merge until we have official data for the test suite

[Francesco149]

gonna use this branch for all the pp changes, WIP...

[Francesco149]

weird, if i remove the angle bonus from speed pp it matches smoogi's xexxar-all site pretty closely, but with the angle bonus in speed pp it gives way too big values. guess i'll wait, maybe xexxar-all isn't updated

[Francesco149]

it might also be that due to the lack of slider calculations, the angle value is off enough to mess it up, will try to approximate slider tail

[Francesco149]

seems closer now, will still try approximating slider tails though

[Francesco149]

nevermind i fixed it, now it matches smoogi's site closely B)

[Francesco149]

note to self: squash all commits after 4f375ab before merging

[Francesco149]

need to add this ppy/osu-performance@2f0fc7b

[Francesco149]

also need to check if the latest commits here affect anything ppy/osu#3839

[Francesco149]

need to add this ppy/osu-performance@2f0fc7b

now that I look at it more closely it seems to be just a refactor and effectively does nothing

[Francesco149]

also need to check if the latest commits here affect anything ppy/osu#3839

seems like it's just refactoring, guess ill start porting this to other versions of oppai

[Francesco149]

cleaned up commit history

[MaxKruse]

Dad pp is finalized, pls push :*

[Francesco149]

cant yet because not all scores are recalculated (for example freedom dive is still 820)

[Francesco149]

sooo defenders is quite a bit off, ill see if i can improve it before merging

[Francesco149]

ooooh the high CS bonus was completely wrong, now it's close 👌

[Francesco149]

average error is 1.1%, worst error is 5.9% on death dance due to missing slider calcs. most maps arent that bad though, pretty happy with it

[MaxKruse]

rip fopen()