Added more comprehensive support for atomic variables #436

Job	Run time
windows-msvc-shared (AVRO)	7m 3s
windows-msvc-shared (CBOR)	8m 57s
windows-msvc-shared (MSGPACK)	4m 17s
windows-msvc-shared (PARQUET)	40m 3s
windows-msvc-shared (JSON)	10m 4s
windows-msvc-shared (CAPNPROTO)	7m 51s
windows-msvc-shared (YAML)	4m 24s
windows-msvc-shared (TOML)	3m 59s
windows-msvc-shared (XML)	3m 51s
windows-msvc-shared (UBJSON)	7m 38s
windows-msvc-shared (FLEXBUFFERS)	5m 35s
windows-msvc (UBJSON)	7m 8s
windows-msvc (YAML)	4m 44s
windows-msvc (JSON)	11m 22s
windows-msvc (FLEXBUFFERS)	5m 28s
windows-msvc (benchmarks)	19m 40s
windows-msvc (CAPNPROTO)	7m 34s
windows-msvc (XML)	3m 48s
windows-msvc (CBOR)	8m 59s
windows-msvc (MSGPACK)	4m 2s
windows-msvc (TOML)	5m 49s
windows-msvc (PARQUET)	19m 43s
windows-msvc (AVRO)	7m 40s
	3h 29m 39s

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