- Use `setTargetedHotend` in `M200`, as with other commands that use
`T` for the extruder
- Synthesize the "invalid extruder" message, obviating several long
strings

Fix DEGREES macro

M110 is a known command

- The command parser now displays “unknown command” in more cases.
Known commands must be added to the `switch` inside `process_commands`
to suppress the error.

Activate BED_MINTEMP error

Call kill() only once when triggered by a temperature error

And call _temp_error() directly for ERR_MAXTEMP_BED to avoid the only one time use of bed_max_temp_error().

Includes #2156.

to avoid stack overflow when called from interrupt.

Some clean up for calls of disable_all_heaters().
'disable_all_heaters()' is called in kill() and again when 'killed' is already set inside _temp_error().

Reduce code size with out_of_range_error function

- Affects code size when automatic bed leveling is enabled

Indentation in process_commands

Cleanup pins in RAMPS_13_EFB boards

No need for +1 on initial seen_pointer

Set seen_pointer before calling code_value

Introduction of Bulgarian - language_bg.h

Kossel Pro

Witbox and Hephestos are RAMPS EFB

Shift call of start_watching_heater() into setTargetHotend()

Fix a couple of doubled semicolons

Move millis call in start_watching_heater

Suppress the line mismatch error after M303

new endstop bits

M33 LONG_FILENAME_HOST_SUPPORT

Command sanitizer

M120 and M121 are reversed