Hi all, as I have been doing lately with the plugins I publish here on spigot and on other "plugin publishing" sites, I centralize the version information on Github. The download button links to the specified version's changelog and jar download - hopefully this will prevent issues where server owners simply downloaded the latest version without being aware of changes made (e.g. the "logout message delay" feature.)
Regarding issues: Yes, I do use the Github issue tracker. However, it probably is best to ask questions in the discussion section here on spigot so other community members have the opportunity to respond if they know the answer. If you do have a reproducible bug though, feel free to report it on the issue tracker:
https://github.com/TechFortress/GriefPrevention/issues