How do you decide when a new build is ready for release?

[Casualfan]

This is really just out of curiosity, and I'm definitely not asking "gzdoom 5.0 when????" or anything like that. I started using GZDoom about a year ago and have loved it, and I have tracked it and Raze's progress very closely. And it just got me thinking: since GZDoom is such an advanced port, and since I'm sure those developing are constantly getting new ideas for features and fixes, how do you determine when a build is ready for official release? And how do you determine what features will go into each new release?

Again, just asking out of curiosity. I just find game development fascinating, and GZDOOM and Raze have been fun to watch evolve and develop in real time.

[Graf Zahl]

Simple: When it's time! (TM)