Add initial typings (#1127) #533

Job	Run time	Billable time
test-postgres (9.5)	4m 5s	0s
test-platforms (3.8, ubuntu-latest, asyncio)	3m 24s	0s
test-postgres (9.6)	3m 48s	0s
test-platforms (3.8, ubuntu-latest, uvloop)	3m 43s	0s
test-postgres (10)	3m 49s	0s
test-platforms (3.8, macos-latest, asyncio)	3m 0s	0s
test-postgres (11)	4m 0s	0s
test-platforms (3.8, macos-latest, uvloop)	3m 40s	0s
test-postgres (12)	3m 43s	0s
test-platforms (3.8, windows-latest, asyncio)	4m 37s	0s
test-postgres (13)	3m 40s	0s
test-platforms (3.9, ubuntu-latest, asyncio)	3m 25s	0s
test-platforms (3.9, ubuntu-latest, uvloop)	3m 15s	0s
test-platforms (3.9, macos-latest, asyncio)	3m 21s	0s
test-postgres (14)	3m 35s	0s
test-platforms (3.9, macos-latest, uvloop)	2m 49s	0s
test-postgres (15)	3m 54s	0s
test-platforms (3.9, windows-latest, asyncio)	4m 27s	0s
test-postgres (16)	3m 40s	0s
test-platforms (3.10, ubuntu-latest, asyncio)	5m 3s	0s
test-platforms (3.10, ubuntu-latest, uvloop)	3m 18s	0s
test-platforms (3.10, macos-latest, asyncio)	2m 37s	0s
test-platforms (3.10, macos-latest, uvloop)	3m 30s	0s
test-platforms (3.10, windows-latest, asyncio)	5m 35s	0s
test-platforms (3.11, ubuntu-latest, asyncio)	3m 16s	0s
test-platforms (3.11, ubuntu-latest, uvloop)	3m 4s	0s
test-platforms (3.11, macos-latest, asyncio)	2m 49s	0s
test-platforms (3.11, macos-latest, uvloop)	3m 38s	0s
test-platforms (3.11, windows-latest, asyncio)	5m 32s	0s
test-platforms (3.12, ubuntu-latest, asyncio)	3m 25s	0s
test-platforms (3.12, macos-latest, asyncio)	3m 22s	0s
test-platforms (3.12, windows-latest, asyncio)	5m 11s	0s
Regression Tests	0s	0s
	2h 0m 15s	0s

Provide feedback