Adds new submodule ion-functions
Updates to latest
Updates README to include brew instructions
Updates to most recent version for rho
Merge pull request #668 from carueda/platform_agent_R2C4

Adjustments to align with new config structure.
Bump MI to include tweaks to lost connection idempotency flag.
Merge pull request #673 from lukecampbell/ion_functions

Ion functions
Bump MI.
Updated agent with idempotency flag protection against intital connect failures.
removed unnecessary log debugs
Merge pull request #689 from swarbhanu/remove_unnecessary_debug

Removes unnecessary log debugs
Bump epu pointer
re-enable single platform launch integration test
merge upstream/master
Bump pyon for new resource agent definitions.
merge upstream/master
Add active unknown handlers and autoreconnect handlers.
merge upstream/master
Added reconnect logic to lost connection state.
Bump pyon for gevent safe fsm.