Adjust licensing
# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
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# On branch master
# Changes to be committed:
#	modified:   .gitignore
#	new file:   LICENSES/LicenseRef-PD-hp
#	modified:   README.md
#	modified:   TODO
#	modified:   dice-stand.scad
#