Merge pull request #1009 from shenrie/master

Bumped pyon
fix initial attempt to incorporate LAUNCHING state and corresponding transition
remove flag LAUNCH_CHILDREN_ON_START (which was used to facilitate testing of
  the launch of the children in on_start and also in INITIALIZE). The launch of the children is now always started (via a greenlet) in on_start.
Merge pull request #1010 from carueda/platform_agent_R2C4

fix initial attempt to incorporate LAUNCHING state and corresponding transition, and add needed associated handling
Use sddevrepo port_agent instead
data type and content fixes for extended platform resources
Merge pull request #1011 from ifreecarve/2013-04-29_platform_extended

Data type and content fixes for extended platform resources
Release Version 2.0.28
Bump Version to 2.0.29-dev
Man in the middle approach to stream configurations
Merge pull request #1012 from lukecampbell/qc

Man in the middle approach to stream configurations
Update aparam_alerts_config name typo.
Added ion_loader comments
Fixed types of TemporalBounds attributes
Fixed OOI preload for external dataset categories
Revert "Merge pull request #1012 from lukecampbell/qc"

This reverts commit 50e194082256f46c64da2abcb0c7211a7325783c, reversing
changes made to ef7837cd843a6c036ae82382ddf3521b4eb691e7.
Added related resource event and minor policy fixes