why don't you do it yourself?
It is such an important feature, that it SHOULD be in the official download of the emulator. If I code it myself, it will be in my copy only. If I post my copy on the net for others to download, they will be downloading a copy other than the official copy. It should be in the official copy, and nothing I can do can cause it to be put in the official copy that is downloadable from the official website. I don't have access to the server for the official site, so I have no way to put my version up there for download, or to merge my code with the official code, so that when the next official version is compiled and released it will contain the serial mouse support(not that I have much faith that there will EVER be another version released, as it's now 2015, and the last official version released was back in 2010). The only thing I can do is to prod the developers to put it in, repeatedly, until they decide to put it in the official version. That's the ONLY way that my actions might have even the SLIGHTEST chance of getting this feature put into the official version. So that's what I plan to do.