add missing QueryUnbufferedAsync<T> API (DapperLib#1912)

* impl QueryUnbufferedAsync<T>
* implement GridReader.ReadUnbufferedAsync<T>

Support for snowflake (DapperLib#1724)

* snowflake tests DapperLib#1687

* actually add the tests!

* merge

copypasta

.Net 5 (DapperLib#1572)

* initial net5.0 tweaks; also fix current IDE warnings

* lib updates and fixes

* more cleanup

* fix snafu

* skip locals init

* disable xunit shadow copy in tests

* test records

* explore scenario that currently works re DapperLib#1571

Enable deterministic build (DapperLib#1433)

* - enable deterministic build
- lib updates for core packages

* set source root if needed

* Restore VS test runner

xUnit won't run in VS without it :)

Co-authored-by: Nick Craver <craver@stackoverflow.com>

since we're targeting net461 again, ensure contrib tests have coverage

2.0 RTM

WIP: Lib updates and prepare for Microsoft.Data.SqlClient (DapperLib#…

…1313)

v2 work; primarily prep for split SqlClient

Bump version to 1.60.0 (DapperLib#1198)

This bumps and locks at 1.60.0 to cope with whatever binding policies .NET Core is enforcing - then we can stick at this until 2.x I guess.

version for public drop