Don't deploy/stow the probe if z-min-endstop is used for homing.
Don't apply `zprobe_zoffset` if probe was not used.

・Update forgotten Configuration.h of K8400

M100 D was running too long - caused watchdog resets.
M100 I showed more free memory than a Arduino Mega has RAM.

Two strategies to address a stuck buzzer

Adjust wait_for_cooling slope

Greek Language by @psavva

Adjust wait_for_cooling slope
and drop mintemp for cooling.

See
https://github.com/MarlinFirmware/Marlin/pull/4169#issuecomment-231544532

Update language_cz.h

Total print time for LCD correction (hours:minutes format)

Dyze High Temp Thermistor Support

Additional tweaks for HOTENDS == 1

Follow-up the PR #4253 (Runout Sensor without SD Card, Print Timer support in M104), etc

New strings:
#define MSG_HALTED
#define MSG_PLEASE_RESET
Some texts shortened for smaller displays.

・Update forgotten example configuration files

Simpler/extensible thermistor test in thermistortables.h

Add a kill-screen

Runout Sensor without SD Card, Print Timer support in M104

Today's fix and cleanup collection

Add TX-buffer for MarlinSerial

Similar to the current Arduino HardwareSerial
but with max. 256 byte buffer-size.

Deactivated by default.

The boards with AT90USB processor (USBCON) already use a TX-buffer.

when no known axis needs to be homed.

Most changes are only caused from altering the indentation.
```
if (axis == X_AXIS ? HOMEAXIS_DO(X) : axis == Y_AXIS ? HOMEAXIS_DO(Y) : axis == Z_AXIS ? HOMEAXIS_DO(Z) : 0) {
  ...
}

to

if (!(axis == X_AXIS ? HOMEAXIS_DO(X) : axis == Y_AXIS ? HOMEAXIS_DO(Y) : axis == Z_AXIS ? HOMEAXIS_DO(Z) : 0)) return;
...

```