Include merge commits in contributor history

[rimutaka]

Only direct commits (1 parent) are assigned to contributors by including the files affected by the commit as contributions. A maintainer doing the hard work of merging PRs would get no credit, which is not right.

Also there is a committer and an author and they are not always the same as in this example: openssl/openssl@690a2b1

Solution 1

Assign all merged commits to the merging contributor.

This should work fine in small to medium size projects. Larger projects may have a maintainer who is not directly involved in writing code and relies on code reviews by others.

[rimutaka]

Adding merge commits may allow for cross-project matching of members (who worked with whom) without obtaining permission of all involved. It may be OK for public repos, but not for private subs.