bump to next snapshot
implement until step (with traverser)
provide until steps without traverser
replace `with` with `withSideEffect`
fix hidden property handling change
value/hiddenValue now return Options

thanks joan for the idea
see https://github.com/mpollmeier/gremlin-scala/issues/56
Merge branch 'tinkerpop3' into tinkerpop3-snapshot
enable dependencyGraph plugin
M6