Added submodules, fixes #291

[fox91]

No description provided.

[dbrekelmans]

Hi @fox91, thanks for the PR! I like the idea of submodules in this case.

If you resolve the conflicts, I will let the CI jobs run

[fox91]

Hi @fox91, thanks for the PR! I like the idea of submodules in this case.

If you resolve the conflicts, I will let the CI jobs run

This PR is supposed to be merged in a new branch created after tag v1.3.3 (as I done in my fork).
This way is possible to solve other bug and maintain support to PHP 7.3+

After that you can also merge with main branch (overwrite generator/doc/update.sh with the new one).

[dbrekelmans]

Hi @fox91, sorry for the late response, but I've merged this to a new 1.x branch. Any future bugfixes regarding PHP7.x can be targeted against this branch and it will use the specific php-docs commit that you have introduced here.

Thanks for the contribution!