Added z acceleration to configs
Endstop/Homing and Zprobe will use Z acceleration for Z if set
Merge pull request #472 from wolfmanjm/add/z-only-move-acceleration

Use Z acceleration for Z only moves, default is off
Added z acceleration to configs
planner is no longer a module
save some memory in block and planner
removed unused fields
Merge pull request #473 from wolfmanjm/refactor/planner-block-memory

planner is no longer a module
make a flash based list of predefined thermistors, in a header file
iterate over that list to find one.
whitespace change
Merge pull request #474 from wolfmanjm/refactor/predefined-thermistor-settings

make a flash based list of predefined thermistors, in a header file
add a move to zero 0,0 option after homing
fix speed/acceleration, only accelerate when doing the homing moves
rename states
rename move to origin
Merge pull request #475 from wolfmanjm/feature/homing-move-to-zero-option

Feature/homing move to zero option
Add M221 extruder flow rate multiplier closes #448
Merge pull request #476 from wolfmanjm/upstreamedge

Add M221 extruder flow rate multiplier closes #448
add ON_HALT event
turn off heaters and motors in on_halt()
call ON_HALT when a limit switch is hit
Merge pull request #477 from wolfmanjm/update/add-on-halt

add ON_HALT event
updated firmware.bin
enable adjust z function when restoring three point leveling plane
Merge pull request #478 from wolfmanjm/upstreamedge

enable adjust z function when restoring three point leveling plane
Add implementation for addMenuItem
Merge pull request #480 from wolfmanjm/upstreamedge

Add implementation for addMenuItem