Fix mismatch between event lists by getting rid of mask input in algorithm with input aggregates

Adrian Casais Vidalrequested to merge
acasaisv/fixoutofbounds into master

Fixes #519 (closed) .

Spotted by @thboettc .

The mismatch between even lists caused CalcMaxCombos to not be able to properly count in some corner cases, in those FilterSVs would write out of bounds.

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