Merge branch 'master' into release-0.7.2

Merge branch 'master' into release-0.7.1

Merge branch 'master' into release-0.7.0

Merge branch 'master' into release-0.6.3

Merge branch 'master' into release-0.6.2

Merge branch 'master' into release-0.6.1

issue #40: fixed in Spark, optional laplace, atomic double #CHANGELOG

readme version

readme version

release 0.6.0-alpha: startNewRelease finished