`CharProgressionIterator`, `IntProgressionIterator...

# language-proposals

[guenther]

CharProgressionIterator, IntProgressionIterator, LongProgressionIterator should be serializable. They just have primitives and are good candidates to add the Serializable-Interface which will makes ranges serializable

[karelpeeters]

That's really #stdlib, but just file a YouTrack issue.

[guenther]

k. Thx