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docs: Update Config_Changes.md with recent coordinate changes

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Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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Kevin O'Connor
2025-10-09 22:45:41 -04:00
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docs/Config_Changes.md
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@@ -8,6 +8,26 @@ All dates in this document are approximate.
## Changes
20251106: The status fields `{printer.toolhead.position}`,
`{printer.gcode_move.position}`,
`{printer.gcode_move.gcode_position}`, and
`{printer.motion_report.live_position}` are changing. These
coordinates used to always contain four components, but now may
contain additional components. The ordering and number of components
may change at run-time - see the
[status reference](Status_Reference.md#accessing-coordinates) for
important details. Accessing any of these coordinates in macros using
the ".e" accessor is deprecated - use something like
`{printer.toolhead.position[printer.gcode_move.axis_map.E]}` as an
alternative.
20251106: The status fields `{printer.gcode_move.homing_origin}`,
`{printer.toolhead.axis_min}`, and `{printer.toolhead.axis_max}`
currently contain four components where the fourth component is always
zero. This behavior is deprecated. In the future these coordinates may
contain only three components. For additional information see the
[status reference](Status_Reference.md#accessing-coordinates).
20251010: During normal printing the command processing will now
attempt to stay one second ahead of printer movement (reduced from two
seconds previously).