Please add "hacktoberfest" tag/topic

[reback00]

I just got an email describing changes for Hacktoberfest this year. They've changed the rules. Now, repositories have to manually opt-in in order to accept entries for Hacktoberfest. Either (a) a "hacktoberfest" tag/topic can be added to accept all PRs on the repo or (b) add a "hacktoberfest-accepted" tag to each PR to be accepted (which is probably impractical for this repo with so many PRs).

The email has these changes highlighted:

After working closely with our friends at GitHub, we are happy to introduce measures that are brand new to Hacktoberfest 2020.

1. Pull requests can be made in any participating GitHub-hosted repositories/projects.

2. Maintainers can opt-in to participate by classifying their projects with the hacktoberfest topic.

3. Your pull requests will count toward your participation if they are in a repository with the hacktoberfest topic and once they have been merged, approved by a maintainer or labelled as hacktoberfest-accepted.

4. Additionally, any pull request with the hacktoberfest-accepted label, submitted to any public GitHub repository, with or without the hacktoberfest topic, will be considered valid for Hacktoberfest.
   All valid pull requests prior to Oct 3 (when these rules were introduced) will be honored and counted toward completion of Hacktoberfest.

Learn more about the changes we've made that will affect your participation.

I participated in previous year's Hacktoberfest with PRs only from this repo. So please add the "hacktoberfest" tag/topic so that many like me can try this year with this repo.

[Zeinok]

it is already there.

[reback00]

Oops, my bad! I saw in the hacktoberfest dashboard that my PRs were not being accepted and that it said it has something to do with the repo not opting in to hacktoberfest. I guess it will update later then.