Added cli option for first-parent

[richardspence]

PR for #117

[ljharb]

I wonder if maybe it’d be better to include every git log argument somehow, rather then hardcoding this one?

[richardspence]

I wonder if maybe it’d be better to include every git log argument somehow, rather then hardcoding this one?

@ljharb Yeah I thought about that as well. There are a few other git log args that seem they could be relevant like --use-mailmap but not sure how often that would come up.

If there's desire to go down that route maybe using a custom arg processor to create the array of git args see collect. The tradeoff is an extra layer of indirection / more complicated interface on the CLI.

[cookpete]

Added --append-git-log in 1.14.0, which lets you add whatever string you like to the git log command where commits are fetched:

auto-changelog --append-git-log "--first-parent --use-mailmap"