Allow configurable polling interval for chapman

Signed-off-by: Rick Copeland <rick@arborian.com>
Add ignore_result option on actors to auto-forget them on completion

Signed-off-by: Rick Copeland <rick@arborian.com>
Move actor options into ActorState

Signed-off-by: Rick Copeland <rick@arborian.com>
Add .chain() method to actors to allow easy chaining to the run message

Signed-off-by: Rick Copeland <rick@arborian.com>
Added append() to groups

Signed-off-by: Rick Copeland <rick@arborian.com>