I submitted a pull request to Vim and the maintainer thanked me, tweaked it, and my name is not in the commit history because of it. I use to be bitter about it, if only a little. So I know how you feel but I put significantly less time into mine so the magnitude of the feeling is much smaller for me. My name is still there in the GitHub pull request though. Just like your name is still in the commit itself and in the mailing list. Try not to fret too much about the specifics of your name being in the author field. It's really just a technical detail.
It sucks but it is what it is. I don't think treating this like you were slighted is appropriate.