Fixes #680. Before custom types, the `typemap` keyword argument was really only about mapping between the standard, supported types. With custom types, we still only support certain type mappings (Int to Float, Any type to String), but we also want to support type mappings like `Int64 => Int32`. This PR readjusts how typemap works when detecting column types to account for the possiblity of custom Integer or AbstractFloat type mappints for Int64 & Float64, and moving directly to String if that's specified.

Commits

Commits on Jul 9, 2020

Fix typemap for our new custom types world