* [1.1.x] IDEX and BLTouch Fixes
Fix bltouch not deploying during fast home, fix dual x carriage setting opposing side park position as destination on tool change
* Update Marlin_main.cpp
* Update Marlin_main.cpp
* Change brackets to be more in conformance with Marlin coding standards
I have Anet a6 and my thermistor is NTC 3950. If the default is 5 (ATC Semitec 104GT-2) it gives overheat upto 330 degrees (real) instead of 250 (displayed). I don't know for sure if all the A6 have such thermistor but I think it's safer to have underheat than overheat. And 3950 looks more spread among A6 searching on Internet. The same is true for the bed though it has small difference at the beginning of scale, actually +-2 degrees.
* Move home all axis prototype to allow access from UBL.h
* Remove home all axis command as it exists in marlin.h now
* Reverse order of tool change and home
Race condition causes E0 carriage to move on E1 commands and crash into parked head if order is reversed. Needs more research into permanent fix, but this will prevent damage to machines in the meantime.
It takes 20 seconds to display the mesh values at startup... If we are going to display this information at startup, we should find a more terse way to do it. Perhaps displaying an entire row of the mesh at a time makes sense?
The maximum movement is 180mm for Velleman K8400.
An offset of `Y_MIN_POS` violates an assertion in `SanityCheck.h`.
Code tested on Vellemann K8400 with Dual Extruder.
For some probes like micro switches the full Z clearance raise between
probing attempts is not required while bigger Z clearance between probe
points is still needed to avoid clamps. The shorter Z raise within
multiprobing same point significantly increase probing speed and the whole
auto level process.
Bisect search merged in #10882 actually works fine for thermistor
tables with up to 255 entries with no overflow, due to C++ integer
promotion rules.
Closes issue #11220.
* Support for multiple Max7219 units in a chain
I'll move this support over to bugfix_2.0.0 in the next few days. And
then look at updating the Max7219_idle() routine to make use of multiple
units in a chain.
* spelling correction
