[Pharo-project] Metacello configuration conventions

Hi, While working with Diego on some configurations, we noticed two different styles of describing the latest non-baseline versions. In one, the versionString version of a dependency is used. That is a defensive strategy, where you want to specify the exact version that will be loaded (and has been tested). In the other the #stable version is used. That is an optimistic strategy. This is much less brittle (but might suddenly not work anymore). Seaside uses defensive/mixed, while Magritte uses optimistic Based on what criteria should I choose which one to use (in a Pharo context)? Stephan & Diego