- Use `line_to_current` in place of `plan_buffer_line`

Latest upstream commits

Catch dangerous extrude before trying several

Added sanity check for MESH_NUM_X_POINTS and MESH_NUM_Y_POINTS

Moved the definitions of the LCD_STR_* to Conditionals.h

Latest upstream commits

Remove Contrast Menu for device U8GLIB_ST7920

Resolved some warnings in Marlin_main.cpp regarding compares of signed and unsigned integers by replacing 'int' or 'uint16_t' with 'uint8_t'.

to avoid errors in Marlin_main.cpp. #1860

In the include tree of Marlin_main.cpp the decision between the display types is not made.
To include the right LCD_STR_* ether 'dogm_lcd_implementation.h' or 'ultralcd_implementation_hitachi_HD44780.h' with all their code.
A 'dogm_lcd_implementation.h.h' would be a curiosity.
So i moved both of the definition blocks to conditionals.h

On the long term it could make sense to use the same numbering for the u8glib and the hitachi symbols.

and cleaned typo.

The other two devices we use in u8glib have more than only dummy code.
Checked this in the library code.

Thermistor values for configurator

Set version to "1.0.3 dev"

IsStopped / IsRunning inline

Update language_ru.h

Latest upstream commits

Squished #1849

Fix typo in readme

- Set `de` to 0 when `position[E] = target[E]`
- Address regression mention in #1846

Mesh bed leveling: Added G29 S3 + finer display steps during manual input + bug fix

Fix G29 not deploying probe in some instances