Merge pull request SQLStreamStore#291 from damianh/hal-downgrade-anc

Downgrade AspNetCore routing middleware dependency to 2.1 (allows running on AspnetCore.App 2.1.x)

Add Optional Deletion Tracking To PG and MySql Stores (SQLStreamStore…

…#281)

Add Optional Deletion Tracking To PG and MySql Stores

Revert "Re-enable read all without prefetch test"

This reverts commit fb2cca0.

Race-condition needs revisit.