work in progress
Merge branch 'MiK' of https://github.com/local-ch/ch.julien into MiK
default accumulators - sum
improve computation

dont convert to double for calculation
minor
default accumulators - product
default accumulators - joinOn
add push to nexus to deploy phase
Merge pull request #2 from local-ch/MiK

default accumulators - sum, product, joinOn