Edit in place should probably be a client's decision

[seandenigris]

For example, aPerson has aName. Right now, when creating a patch, it's up to aName to decide whether to return one change swapping itself for the new name, or to return a list of its own changed fields. For example:

MpName>>#patchRelativeToBase: oldValue as: description of: receiver
	"Edit me in place instead of full replacement like a value object"
	^ self patchRelativeToBase: oldValue

However, this might not always be the same for different users of aName class.