Any source files missing the GPLv3+ header, including the SQL files, are intended to be released under GPLv3+. The header
was omitted in certain cases due to the files being embedded in the generated executable.

In the case of documentation files, they are and are intended to be released under the CC-BY-SA 4.0 license,
available at https://creativecommons.org/licenses/by-sa/4.0/legalcode