last stable version at https://lists.cpunks.org/pipermail/cypherpunks/2022-July/102291.html
although there can be further optimization, I think it makes sense to move a little toward using it for me next step might be to change flushing so the index can be accumulated during writes or mini flushes, so as to be able to limit the total size of an index per flush if needed, without issue. makes sense to clean/reduce/remove the notes and assertions to ease copying algorithm to other languages etc
