[2.0.x] Reset timer count before first block step

[2.0.x] Add board Mini RAMBo 1.0a

[2.0.x] TCNT0 => HAL_timer_get_current_count

Fix #8710

* repair reverse_pass()

And make it readeble.
This was broken a long time ago.
Not competely unfunctional but far from optimal.

* Minor speedup when calling calculate_trapezoid_for_block

2 float / to 1 foat / and 2 float *

* Various style changes

* Better off mesh behaviour for UBL

* Suggested ubl.h changes

* Nozzle.cpp: replace incorrect M_2_PI (2/pi) with 2.0 * M_PI

* Use RADIANS(360) instead of 2 * M_PI

[bugfix-2.0.x] minor planner.cpp speed improvement (follow up to COREXY stutter changes PR #8698) 

[2.0.x] Discard "continued" blocks on interrupted move

Update TEMP_BED_PIN in MIGHTYBOARD_REVE

[2.0.x] MULTIPLE_PROBING — Why stop at 2?

[2.0.x] Improved Core-compatible jerk code

[2.x] Address #8644

Removed missing include file

[2.0.x] Purge blocks on endstop/probe hit

[2.0.x] Cleanup, bugfixes, parity with 1.1.x