Add a RAF factory to ClientContext (*dangerous* at present as in-RAM-only)
Start work on SplitFileFetcherNew, partly from old branch, builds but not complete yet.
Lots of work on SplitFileFetcherNew etc, i.e. integrating the new splitfile code so it can actually work. Not finished yet.
Factor out translateException into SendableGet
Key selection token is always a SendableRequestItem
Initial implementation of SplitFileFetcherGet (no cooldown support at the moment).
Try it out. Wait for the bang.
Fix infinite recursion
Better error message.
Minimum memory allocation needs to be slightly bigger.