Is this crate still maintained?

Last commit was three years ago, and there are two open merge requests that haven't received any updates since they were made one year ago.

Should I file an "unmaintained" advisory to RustSec? @karroffel as crate author, you can always refuse an "unmaintained" advisory being filed, but if you cannot be contacted it may be filed as an "implicitly unmaintained" crate, the guidelines are here. Also, this is not an attempt to pressure you into working on this, if you don't have the resources to do so, it's totally okay, but then it would be appreciated if you could make a statement about the maintenance status.