Suggestions for files (e.g. images)

[mfulton26]

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On a pull request, I want to be able to suggest changes to an entire file, specifically binary files such as images. I also want to be able to do this for any file via am API.

Why?

1. When manually reviewing someone's pull request I might pull down a GIF/JPEG/PNG/etc. and make some changes and then suggest replacing the file in the review. Today I can do this with a comment but then the author has to go pull it down, commit it, and push it whereas a suggestion comment could be committed via GitHub UI.
2. I want an automated visual regression testing pull request check to be able to comment on screenshot snapshot files that should change given the UI code changes. Then authors can review the changes and commit them or dismiss them when needed. For this to work, I'd like to be able to suggest creating/deleting files or updating files that aren't currently changed in the pull request. Doing so via the UI might be tricky but could be nice too, however my main idea is to allow such programmatically for visual regression testing checks.