Async and Sync clients, implementing v6 API #108

Job	Run time
Build and test (ubuntu-latest, 3.7)	34s
Build and test (ubuntu-latest, 3.7)	34s
Build and test (ubuntu-latest, 3.8)	27s
Build and test (ubuntu-latest, 3.8)	27s
Build and test (ubuntu-latest, 3.9)	27s
Build and test (ubuntu-latest, 3.9)	27s
Build and test (ubuntu-latest, 3.10)	32s
Build and test (ubuntu-latest, 3.10)	32s
Build and test (ubuntu-latest, 3.11)	34s
Build and test (ubuntu-latest, 3.11)	34s
Build and test (ubuntu-latest, 3.12)	29s
Build and test (ubuntu-latest, 3.12)	29s
Build and test (windows-latest, 3.7)	1m 28s
Build and test (windows-latest, 3.7)	1m 9s
Build and test (windows-latest, 3.8)	1m 29s
Build and test (windows-latest, 3.8)	1m 4s
Build and test (windows-latest, 3.9)	1m 28s
Build and test (windows-latest, 3.9)	1m 7s
Build and test (windows-latest, 3.10)	1m 26s
Build and test (windows-latest, 3.10)	1m 1s
Build and test (windows-latest, 3.11)	1m 18s
Build and test (windows-latest, 3.11)	1m 18s
Build and test (windows-latest, 3.12)	1m 22s
Build and test (windows-latest, 3.12)	1m 8s
Build and test (macos-latest, 3.7)	38s
Build and test (macos-latest, 3.7)	38s
Build and test (macos-latest, 3.8)	40s
Build and test (macos-latest, 3.8)	40s
Build and test (macos-latest, 3.9)	43s
Build and test (macos-latest, 3.9)	43s
Build and test (macos-latest, 3.10)	43s
Build and test (macos-latest, 3.10)	43s
Build and test (macos-latest, 3.11)	57s
Build and test (macos-latest, 3.11)	57s
Build and test (macos-latest, 3.12)	46s
Build and test (macos-latest, 3.12)	46s
	30m 18s

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