There seems to be a DapperExtensions project, but there is also a SqlMapperExtensions class in the Dapper project. Is there overlap? Is one preferred over the other? I can't find any documentation on Dapper.Contrib.
Dapper.Contrib is the assembly name: https://github.com/StackExchange/Dapper/tree/master/Dapper.Contrib
SqlMapperExtensions is the static class containing the contrib methods within
The best documentation is the test case class: https://github.com/StackExchange/Dapper/blob/master/Dapper.Tests.Contrib/TestSuite.cs