For released versions of Chopstx, it is OK to distribute a binary
without the copy of the GNU GPL, as the license notice of Chopstx
include following exception to GNU GPL.

--------------------
As additional permission under GNU GPL version 3 section 7, you may
distribute non-source form of the Program without the copy of the GNU
GPL normally required by section 4, provided you inform the receipents
of GNU GPL by a written offer.
--------------------

Note that "written offer" is still needed when you distribute binary
only.
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