Compress bitmap
go test -bench=.* -benchmem
BenchmarkBitZip-2 5000000 241 ns/op 72 B/op 5 allocs/op BenchmarkMap-2 30000000 44.3 ns/op 0 B/op 0 allocs/op BenchmarkBitset-2 1000000000 2.29 ns/op 0 B/op 0 allocs/op BenchmarkRoaring-2 3000000 607 ns/op 152 B/op 6 allocs/op