Support new production DueX5 and DueX2 boards and Fan 8
Fix M21
Queue M42 commands
Fix M106 incorrect P parameter check

Corrected USB VID/PID combos in CoreNG

Updated driver to support our new VID/PID and also the Bossa port
Fixed issue with IP addresses containing zetos on Duet 06/085
Improved error mesages when M303 command has out-of-range parameters
Don't generate error message when the chopper control register is
changed, and allow it to be read back
Increased max motor current to 2.4A

Fixed bug with M408 S1/S2 reples when there are no extruders configured
Changed Duet085 network startup to not startb protocols when network is
not active

Merged in chrishamm's code queue and input buffer code
Increased heater tuning timeout for finding peak temperatire from 60 to
120 seconds
Implemented M204
Increased precision of reported coordinates to 3 decimal places
PanelDue status responses continue to be sent while executing
M109/116/190/191 commands

Fixed more typos

Fixed typos

Fixed homing on CoreXY printers
Added firmware file sanity check
Fixed reply from M290 with no parameters
Limit the number of X grid points so that we can read in height map
files without getting line overflow
If there are too many grid points in a M557 grid definition, suggest a
suitable spacing ti the user
Fix network on Duet Ethernet
Bug fix for FTP directory listing on Duet Ethernet
Limit the rate at which some warning messages are generated
Support VSSA fault detection on new prototype board

Fixed typos

Temperatures now default to 0C instead of -273C
Handle G2 ande G3 in simulation mode
Implemented M586
Removed support for M557 P parameter. Use a bed.g file instead.

Moved call to ExtrapolateMissing in grid.cpp to what I believe is the
correct place
Tidied up code to fix compiler warnnigs and confirm to style guidelines

- reduced complexity of interpolation due to consistent grid

* calculate recipSpacing while loading heightmap.csv

* HeightMap::Interpolate2 was the wrong way around

* Grid interpolation bounds checks

Reduced SPI speed to avoid data corruption when uploading files
FTP directory listings now work on Duet Ethernet. File transfers still
don't work.

- Baby stepping is now implemented using the M290 command. The
accumulated baby stepping amount is reported in M408 replies.
- Faster
and easier-to-use auto tune algorithm with more consistent dead time
measurement
- M109, M190 and M191 commands now send the temperatures
ponce a second if the command cam form the USB port and Marlin emulation
is chosen
- The name of the firmware file to load is now passed to IAP,
so that iap4e.bin cab be used on both the Duet WiFi and the Duet
Ethernet
- Reduced the Duet WiFi VIN over-voltage detection threshold
from 29.5V to 29.0V

Bug fixes
- On the Duet WiFi, if you sent command
M122 while the machine was printing then occasionally it would stop and
reset due to a watchdog timeout
- If multiple input sources sent
overlapping G4 (dwell) commands, either or both of them wold not be
executed correctly