Use home position in gcodeplater
More TODO documentation for gcodeplater
Fix extrusion-only G92 detection in gcodeplater
Cleanup in gcodeplater
More cleanup
Fix offset computations in gcodeplater (maybe ?)
Add some verbose info to files produced by gcodeplater
Go to center of next printed object before printing it in gcodeplater

This avoids the head from going down and banging in the previous object.
Minor cleanup (use tuples instead of lists for 3D positions)
Add per-layer plating to gcodeplater
Pass gcodeplater output to a gcode analyzer before writing it
Add helpers for abs_pos and current_pos in gcoder
Simplify last_real_position computation by using analyzer
Store & restore E status for each object
Oops, missing \n
Store & restore relative positionning status for each object
Store & restore current tool in gcodeplater
Update todolist for gcodeplater
Update TODO list
Explicitely handle IOErrors in printcore.connect (#446)