Minor updates:
added +3.3V and pin 0 to the breakout pins and  shift up breakout pins so they are all in a row on each side
(includes tx/rx for bluetooth, no more easily available for bluetooth mount on top of teensy)
create 2mm spacing around outside edge (no parts)
create 2mm spacing around CO2 meter
added ground plane to the LM5111, moved it to a better position
corrected module sizes on main board for 3 x DG5147 (new module - sc70-6) and 3 x MOSN-TSOP6 (new module sot23-6), and changed named to just MOSN on schematic
corrected module sizes on add-on board for 2 x DG5147 (new module - sc70-6) and 3 x MOSN-TSOP6 (new module sot23-6), and changed named to just MOSN on schematic

Signed-off-by:  <Greg>