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Introduce bind operation on PgConverter surface (#6566)
Remove PgBufferedConverter virtual dispatch hop (#6574)
Move GetChars state off PgReader (#6575)
Implement state disposal on exceptions for providers
Rework converter db null and CLR null handling (#6564)
Simplify Size and BufferRequirements combine overflow handling (#6577)
Move write state types out of generic converters and rename (#6572)
PgTypeInfo CLR type variance and perf improvements (#6562)
Fix some more state cleanup cases