Version 0.78e-dc42

M301 and M304 commands to set PID parameters now take an additional S
parameter. This allows for variations in cartridge heater power and
supply voltage to be taken into account more easily.
Temperature errors are reported to the web server as well as to USB.
The Heat section of the M122 diagnostics report now shows the
accumulated PID I-term.
G90 and G91 commands now affect only the the axes, not the extruders.
Bug fix: numerous calls to strncat were being made with a 'nchars'
parameter that was larger than space available in the destination
buffer.
Bug fix: print moves received just prior to an M109 or M190 command were
not executed until after the heater had reached temperature instead of
before.
Added 0.78e binary and removed old binaries