more LIVR rules
Theses rules (with their test suite) come from js-livr-extra-rules.
The homepage is at <https://fperrad.frama.io/lua-LIVR-extra>, and the sources are hosted at <https://framagit.org/fperrad/lua-LIVR-extra>.
Copyright and License
Copyright (c) 2018-2019 Francois Perrad
This library is licensed under the terms of the MIT/X11 license, like Lua itself.