related to current_position[Z_AXIS] and retract_zlift.

'+ =' -> '+='

Fix for #1786

- Add comments documenting `thermal_runaway_protection`
- Add an enum for the thermal runaway states
- Add macros for temperature helper functions
- Fix a glitch with the z probe sled in homeaxis

Catch unlikely but possible error and head crash when using
Z_PROBE_REPEATABILITY_TEST

Fix MIN&MAX temperatures again

old bump_divisor for cartesian/corexy-printer

* Use "G29 S3 Xn Yn Zn.nn" to modify bad probed point manually
* Changed manual Z steps from 0.05 to 0.025 and made brought it to Configuration.h

is not used.

some people are starting to ask why homing is so slow. this is the old standard hard-coded value.

Conflicts:
	Marlin/Marlin_main.cpp

Added new - changed entries from Fix up LCD_PROGRESS_BAR

Fix homing and leveling

Added support for Atmega 1281 chip

for when no LCD is defined.
Fix for #1770.

Updated documentation in Configuration.h.
Cleaned up and commented some code relating to Z_PROBE_ENDSTOP.
Separated Z_MIN_ENDSTOP and Z_PROBE_ENDSTOP completely.

Fix: Audio feedback for MENU_MILTIPLIER_ITEM click

Added new trasnslatable labels.

- Include the current Z when raising the axis after and between probing
- Add `sync_plan_position_delta` for parity with `sync_plan_position`
- Clean up and clarify `M48`, `dock_sled`, and others

and use them in temperuture.h

Flattened the if structure - the preprocessor is doing the work - not the Arduino. Arduino.

replaced GE0 with th matching GEX in the second row.
added some ()

Conflicts:
	Marlin/Marlin_main.cpp

* Added MSG_END_HOUR and MSG_END_MINUTE labels to all language files.
* Available translations:
  EN, FR, DE, ES, IT, PT, PT-BR.

Correct XYZ after obtaining plan_bed_level_matrix

The current position needs to be updated by using the inverse
`plan_bed_level_matrix` on X, Y, and Z. All moves in the planner are
transformed by the `plan_bed_level_matrix` from this point forward.

Raise when not retracting

Code to raise the probe before retraction is good, but the code should
always raise the probe, not just when retracting

Fix EXTRUDER_OFFSET compiler error

Correct the comment about M206