Merged in chrishamm's changes to Network, PrintMonitor, and his support
for firmware updates from SD card
Fixed print monitor issue that threw out the layer count and time
estimates when there was an initial extruder priming move in the start
gcode
Merged in Dan's thermocouple support
Define serial port allocation in Pins_duet.h
Fixed some leaks of OutputBuffer objects under error conditions
The terminating newline character in a gcode response is now added in
HandleReply
Implemented F, H and R parameters to M106 command. The second fan output
on a Duet 0.8.5 now defaults to being a thermostatic fan at power up.
Improved speed of file upload to SD card
G32 is now allowed if the printer has not been homed, if there is a
bed.g file
G30 commands are no longer allowed on a delta that has not been homed
M572 parameter P (drive number) replaced by parameter D (extruder
number)
File info requests are now processed in stages to reduce impact on
printing (thanks chrishamm)
Use latest network stack and webserver modules from chrishamm (thanks
chrishamm)
Added Roland mill support (thanks RRP/chrishamm)
Added S parameter (idle timeout) to M18 ans M84 commands (thanks
chrishamm)
Moved I/O pin assignments to separate Pins.h file to more easily support
alternative hardware (thanks dnewman)
Bug fix: filament usage and % print complete figures were incorrect when
absolute extruder coordinates were used
Bug fix: file-based print estimate was occasionally returned as 'inf'
which caused the web interface to disconnect
Bug fix: M666 now flags all towers as not homed
Bug fixes to extruder pressure compensation (M572 command).
Enabled gcc compiler warnings. Fixed over 100 warnings including at
least one actual and several potential bugs.
Simplified delta calibration code and added X and Y parameters to M665
command
Implemented chamber temperature commands (thanks chrishamm)
Merged in zpl's latest changes to Network and Print Monitor modules,
providing DHCP and Netbios name support
Added command M999 S4321 to unlock flash memory, reset and boot to BOSSA
port
Z dive height is now relative to Z probe trigger height and default is
reduced to 3mm
Added experimental support for acoustic probe for delta printers
Bug fix: firmware once again prevents Z homing before X and Y are homed,
if the Z probe is used for Z homing
Various code tidying
