Unexpected behavior of release note generation between tags

Great tool and appreciate that you wrote this. I am trying it out and have run into an unexpected behavior.

This is probably best explained in an image, so please see the below image.

Basically, the issue is that I expecting that release notes pick up commit messages between tags in the following way:
- tag 2.0.0 (another commit msg here "close issue 3")
- commit msg 1 "close issue 2"
- commit msg 2
- tag 1.0.0 ( a commit msg here: "close issue 1)

For release version 2.0.0, I expect to see:
"close issue 3"
"close issue 2"
"commit msg 2"

My testing repository is here:
https://github.com/Aperio-Group/testingstuff/settings

Here were my commands I used:
2061 git push origin v3.0.0
2062 gren release
2063 git touch adding_feature.txt
2064 touch adding_feature.txt
2065 git add adding_feature.txt
2066 git commit -m "adding a cool feature. this closes #7"
2067 touch adding_another_feature.txt
2068 git add adding_another_feature.txt
2069 git commit -m "adding another feature. this closes #8"
2070 git tag v3.0.1
2072 git push origin v3.0.1
2073 gren release

Please let me know if I'm using the tool incorrectly.