paging smalltalk experts: does smalltalk have good approaches to dependency upgrades? iirc there was some work done on representing dependencies in some serializable way outside an image? and i know there's some data migration stuff on object instances too... but without having deep smalltalk expertise, my initial sense is that upgrading running code in an image feels a lot messier than static "trad code". (eg, what happens if i have modified parts of the dependency at…