White space corrections.
Whitespace corrections
Command.cc:
 - Whitespace fixes
 - Changed behaviour of VREF when sleeping.  VREF stays at normal value when in Change Filament mode to help prevent print head movement, in an effort to resume printing from the same spot after filament change.

EepromMap.hh:
 - Added STOP_HEIGHT_VALUE location to the EEPROM Map used for Filament Change Stop Height settings.
 - Moved FREE_EEPROM_STARTS value out to account for the addition of STOP_HEIGHT_VALUE.

EepromMap.cc:
 - Added default value writes for Filament Change Stop Height feature.

Host.cc:
 - Whitespace fixes.

StepperAccellPlanner.hh:
 - Added function descriptions and declarations for setting and getting Filament Change Stop Height enable variable.

StepperAccelPlanner.cc:
 - Added checks to see if at correct height to stop for a filament change driven by the Filament Change Stop Height enable.
 - Added Eeprom includes to read and write Filament Change Stop Height value.
 - Added Filament Change Stop Height value variable and Filament Change Stop Height enable.
 - Added function to change Filament Change Stop Height enable and request an EEPROM read for Filament Change Stop Height value.
 - Added function to return current value of Filament Change Stop Height enable variable.

StepperAccellPlanner.cc:
 - Included StepperAccelPlanner.hh file.
 - Added StopHeightMenu instantiation.
 - Changed build percentage to switch between percentage and time of build so far.
 - Added menu for Change Filament Stop Height feature.

StepperAccellPlanner.hh:
 - Added menu for Change Filament Stop Height feature.

Menu_locales.hh:
 - Aligned all PROGMEM text to make it easier to check for extra or missing characters.
 - Added PROGMEM text for Change Filament Stop Height menu.
 - Fixed missing characters in specific lines within certain menus.
Comment cleanup
Whitespace fixes, changes and corrections to the menu structure and text.
Whitespace fixes.
current_version.txt:
 * Added description of 7.3.2 and 7.3.1 firmware releases

Motherboard.cc:
 * Whitespace fixes
 * Changed error handling behaviour, more heater errors will cause the print to be aborted
 * Added heater errors

ThermocoupleDual.cc:
 * Changed error reporting algorithm, error codes are now returned and temperature value is passed by reference
 * Added error codes for communication error with the ADC chip

ThermocoupleReader.hh:
 * Changed error reporting algorithm, error codes are now returned and temperature value is passed by reference
 * Whitespace fixes

ThermocoupleReader.cc:
 * Changed error reporting algorithm, error codes are now returned and temperature value is passed by reference
 * Added error codes for communication error with the ADC chip

sd_raw.c:
 * Added fix for Rev H SD card read speed differences

Heater.hh:
 * Added error codes for communication error with the ADC chip

Heater.cc:
 * Added error codes for communication error with the ADC chip

Menu.cc:
 * Changed maximum preheat temperature to 280 for extruders and 130 for heated build plate

Menu_locales.hh:
 * Removed unused error
 * Slightly changed wording of existing heater errors
 * Added numbers to heater errors
 * Fixed print out formatting

TemperatureSensor.hh:
 * Added error codes

TemperatureTable.hh:
 * Fixed access to temperature tables allowing full tables to be accessed

TemperatureTable.cc:
 * Fixed access to temperature tables allowing full tables to be accessed
Create Heating_Failure_Description.md
Update Heating_Failure_Description.md

Added all current heater errors/Heating Failures as well as their causes and printer actions.
Fixed numbering of Heating Failure messages
Merge remote-tracking branch 'origin/height_stop' into height_stop
Fixed issue preventing the printer from checking for extruders not heating properly.
Added timeout (15 minutes) to change filament command which results in the printer going to sleep.
fixes to z pause height screen order : Warning Stack Trace is on in this build
removed config check in ThermocoupleReader
updated error handling to use enums in ThermocoupleReader
Minor modifications to ThermocoupleTable for clarity
Minor modifications to Command.cc for clarity
Merge branch 'height_stop'

Conflicts:
	firmware/src/MightyBoard/Motherboard/lib_sd/sd_raw.c