Add explain to output dotfile of cascading workflow.
Merge pull request #133 from alexrobbins/feature/explain

Add explain function to output dotfile of cascading workflow.
use thread locals in KryoService
update to edb 0.4.0-RC2
Merge pull request #135 from nathanmarz/feature/thread-local-kryo

use thread locals in KryoService
bump to dep to elephantdb 0.4.0 final
bump to carbonite 1.3.2
bump to elephantdb-cascading 0.4.1-SNAPSHOT
fix build
bump to elephantdb-cascading 0.4.1
bump elephantdb-cascading snapshot