KitchenSink4XL 1.2.3

• A workbook mutation that runs longer than ten minutes keeps its write lock. The lock was previously broken on age alone even while the holding process was alive, which let a second writer into the same file and reopened the read-modify-save race the lock exists to close.
• A lock written by another machine is never reclaimed from this one. A PID number on a network share says nothing about a process on a different computer, so a foreign-host lock now makes the waiter wait and then refuse by name.
• com_render_sheet renders. It previously returned a success result without producing an image; it now produces the image, or refuses and says why.
• Charts this server creates are drawn with their axes.