little tool for tournament cross-tables

bring back everything from commit a68647ae22

We only want to unwind the source editing.

Created by  Kartik K. Agaram  on November 6, 2022
JCXL74WVQ23V53EOCKA2NXQIYA5NNOXGN5WYC7ZW42EI2I6D5IJAC
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