resolve https://github.com/StackExchange/Dapper/pull/1313/files/ed78dd6a447b1dac20e0bba55848b6fbf87198e6#r318100560

make sure System.Data and Microsoft.Data tests can't squabble; record which Microsoft.Data tests *will never work*

drop the SqlClient ref and associated API; this makes it a (minor) breaking change, so rev the semver

detect IEnumerable<T> for some T : IDataRecord dynamically, rather than via a hard-coded handler (AddSqlDataRecordsTypeHandler)

* String and byte[] tuple elements cause InvalidProgramException

* Stop setting current index local which is nonexistent in ValueTuple deserializer

* prep work for adding Microsoft.Data.SqlClient support/tests; SqlClient dependency is not yet removed

* Failing tests for tuples larger than 7

* Special-case IL generation for ValueTuple

* Make value-processing logic available to ValueTuple generation

* fix #1228 - rev sqlclient to 4.6.0
* use transitive deps for SqlClient

When reading Geometry and Geography values from the database, we need to specify the SRID explicitly to retain it in the DbGeometry / DbGeography type. (#1038)

merging, thanks, and sorry for delay

thanks, appreciated

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.