add a mutex to the agent so we don't delete it when using it
don't delete an agent if the data is concurrently being used
remove the notion of last sent level from VoxelAgentData
remove the childMask member variable VoxelNode
move the voxel system to 40,0,40, only re-render on new voxels
change the loadBitstreamBuffer method to accommodate absence of childMask variable
use a thread to distribute voxels to clients on a clock
Merge remote-tracking branch 'origin/master'
merge with brad's sphere/load file changes