need IsReference for new installer
Fix bugs in Checksum and add failure message handling
add failure message handling
remove ant download caching.  Will be re-implemented in Ant.  The installer will pass in whether caching is enabled or not and what folder to use
add a few AIR and FP checksums
upgrade version to 3.1.  It appears that builds like 3.0.1 are not supported unless you set the 1 as a build number
add failure message handling.  The tracker for failures should now contain a bit more information.  Also add option to not log progress events (which made for very large logs) and try to make the context menu a bit more friendly