[Pharo-project] OrderedIdentityDictionary in a more general package

The class "OrderedIdentityDictionary" is currently defined in package "Spec-Core". Since it is useful also in other scenarios and I do not want a dependency on spec: wouldnt it make sense to move it to a more common "Collections-..." package. Since there is already "Collections-Unordered" I would suggest to put it into "Collections-Ordered". Mmmhh ... but then class OrderedCollection would have to move from "Collections-Sequenceable" to "Collections-Ordered" as well (at least from the name). Any comments on that... Thx T.