Added support for Duet 0.8.5 with auto detection between 0.6 and 0.85
board types
Added P parameter to M115 command to set board type
Changed M115 output to report the board type that was configured or
auto-detected
Improved ISR and step pulse generation efficiency to allow higher
movement speeds, especially wheh using 0.9deg/step motors
Added XYZE parameters to M569 command to allow driver remapping
Added R parameter to M569 command to allow enable signal to be reversed
when using external drivers (thanks dnewman)
Removed M558 R parameter because boare type 0.7 can now be set via M115
instead
Moved Fan0 RPM sense pin to PA14 to avoid conflict with Duet 0.8.5 FAN1
pin
M408 poll command can now be handled concurrently with other commands
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)
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
Prevent setting of absurdly high hot end temperatures
Added R parameter to G1 to go back to previous location, with optional
offsets
Allow Pronterface and PanelDue M105 requests to execute during file
macros etc.
Added more status information for PanelDue to M105 S2 command
Send replies when prints are paused, resumed or cancelled
Added missing newlines at end of M105 responses
Increased X and Y course homing speeds
Added almost instant pause functonality
Support pause and resume macros
Support nested macros
Support zpl's web interface
Merge in zpl's web interface and network changes
Add R parameter to M105 command for PanelDue
M98 can now run macros from any SD card folder
