Comments and improvements welcome.

in src/libinjection_sqli.c edit the definition

#define LIBINJECTION_VERSION "3.9.1"

There isn't much of specific format. It's not GNU changelog style. Just make sure it looks good in markdown.

Something like this

make test
git commit -m 'VERSION'

This will get the version number from the file above and create a local and remote tag.

I would be great to dump a src tarball on github releases.