As part of a collaborative Creative Commons project, I would like to allow editors to contribute by editing a relatively large text file: ~8 Mb, ~100k lines. Ideally, contributions would be git pull requests that the project administrator (aka: me) would integrate to the master branch.
However, potential contributors are not programmers, so I cannot assume that they know or are willing to learn how to use git.
Within Github, it is possible to edit text files and to create pull requests from these edits in a way that does not require any proficiency with git. However, this feature is limited to 5 Mb text files.
Basically, I am looking for this Github feature, but not limited to 5 Mb files. I am also interested in wiki-like editors for large text files, as I could generate the git pull requests on the fly from the wiki edits.
Note: this question was duplicated from this stackoverflow question. I hope superuser is a better place to ask this question.