bump release version to 2.02

upgrade to net6.0 rc1.

fix netstandard2.0 WithCancellation extension method.

bump version to 2.0.0-rc4.3

performance improvement

avoid accessing disposed pooled array in the MemoryOwnerItem

add netstandard2.0 support

fixed PipeDecoder critical bug

bump version 2.0.0-rc3

update version to 2.0.0-rc2

version 1.1.0