use bintray-sbt plugin

upgrade to SBT 13
copy in custom shell prompt
Merge branch 'maintenance' into develop

Pull in update for publishing to Bintray

Conflicts:
	project/Build.scala
chose better names for project artifacts
introduce SchemaEntityBuilder as an alternative to Props
make use of SchemaEntityBuilder in test code
make ToDId type class more flexible

accept any type that is viewable as a Long
Merge pull request #67 from pellucidanalytics/topic/dlong-view-ToDId

improve ToDId type class
Merge pull request #68 from pellucidanalytics/topic/schema-entity-builder

introduce SchemaEntityBuilder
Merge branch 'develop' into topic/quasiquote

Pull in upstream changes from develop.