Remove genereics & hard coded ValuesSource references from Matrix Stats#51131

Merged

not-napoleon merged 8 commits intoelastic:feature/extensible-values-sourcefrom

not-napoleon:fix-array-values-source-aggregation-builder

Jan 22, 2020

Commits on Jan 21, 2020

Commits on Jan 22, 2020

Merge branch 'feature/extensible-values-source' into fix-array-values-source-aggregation-builder
not-napoleon
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