[pyre]

You just have to be around for some of them. Sometimes pg has done things to the UI of the site, then there is a large thread of community commentary, then it's kept, modified, or removed. If the feature shows up, and then goes away over the course of a day or two, you might miss that anything happened.

[loumf]

In the past pg has mentioned adding a feature to the running instance via a connected REPL, not the real source. If it proves its usefulness it goes in the source -- if not, the next restart removes it.