Improved speed of integer square root function
Fixed bug in GCodeBuffer IsEmpty function (thanks zpl)
Changed tool numbers to start at T0 in all /sys files
Added sample macro files
M0 no longer turns motors off
Updated M18 and M84 as per zpl fork
Don't insist that user provides values for all 5 possible extruders in
M906 command
Added Ormerod 2 sys files
Updated web interface files