I built a web-based documentation archive for Aurora 4x C# that compiles all changelogs and launch documentation into a single, up-to-date reference. You can read (or search) the current state of any system with all patches, updates, and bug fixes organized inline, or browse the raw changelogs version by version.
I especially like that planned stuff is being highlighted so it doesn’t get confused with what is currently in. Does the tool automatically keep itself up-to-date with stuff that is posted in the changelogs section?