* Splitstore chain prune
* Protect on reification for simpler logic and sound cold compact protect
* Recovery from checkpoint during chain prune
* Splitstore (discard and universal mode) running in itests
* Add pause and restart functions to itest block miner
* Add config options to itest full nodes
* Add FsRepo support for itest full ndoes
Co-authored-by: zenground0 <ZenGround0@users.noreply.github.com>
Interleaved puts/views could get really slow and there's no real reason
to use view under the covers here because the underlying blockstore is
always a "memstore".
