comment regarding uuid lib
remove duplicated code when setting up connections
Add logg based logging
Add logg based logging
use unbuffered channels with self-recurrent shortcut.  all neurgo and nv tests pass.
enhance cortex copy test to make sure neurons point to valid cortex.
add cortex.validate and repair
Merge branch 'refs/heads/fix_buffer_channel_resize2'

Conflicts:
	neuron.go
remove unneeded log statement