This commit makes several changes:
¤ The mod (finally) uses the lurkcoinV3 API.
¤ Transactions to non-existent users are reverted (provided both
servers are using the updated mod)
· There is a small processing fee on transactions to invalid users
(definitely not a bug)
¤ Fix non-minetest_game formspec prepends on ATM formspecs.
¤ Stop overriding minetest.log.
¤ Add luacheck workflow based on the one at
https://github.com/BlockySurvival/bls_custom
¤ Fix errors reported by luacheck.
luk3yx