Update for 0.1.0-SNAPSHOT
misc edits
Refactor variable names
Retire "sigmoid" functions in favour of "logistic"
Rationalise tanh functions
shoift alternative implementations to AlternativeMaths
Merge branch 'develop' into release-0.1.0
use latest randomz dep
[maven-release-plugin] prepare release mathz-0.1.0
Merge branch 'release-0.1.0' (early part)