Remove the new-project task
Update sample-project-pallet for pallet.ctions
Update task option procession
Update pallet project file creation

Make pallet project file creation on demand only.
Add p.action/with-action-options to p.project.load

Makes with-action-options available unqualified in the pallet.clj project file.
Add edn output in nodes task

The nodes task can be invoked with `-f edn` to output a clojure data structure
describing the nodes.
Fix task argument handling for flags
Add options to up and down tasks

Adds --quiet, --format, --selectors and --phases switches.
Add group name to node output