experimental persistent map data structure

magical 82711582b1 use compact node arrays ... although this does reduce the amount of memory allocated during Set by more than half, it doubles the number of allocations and doesn't seem to impact the runtime. frustrating.		2022-01-23 03:11:46 +00:00
pmap.go	use compact node arrays	2022-01-23 03:11:46 +00:00
pmap_test.go	use compact node arrays	2022-01-23 03:11:46 +00:00