mAdditionalBonusAtThisLevel
F32 = 0 A flat amount that is added once from this level.
A level at which a ByCharLevelBreakpointsCalculationPart changes its bonus per level and adds a flat amount.
F32 = 0 A flat amount that is added once from this level.
F32 = 0 The bonus per level from this level on, until the next breakpoint. It also counts for this level itself.
U32 = 1 The champion level of the breakpoint. Both changes apply from this level.