* upgrade to 3.1
* write inline data using invariantCulture
* add tryMulti in AutoML and test
* add test for AutoML inferColumn API
* Update test/Microsoft.ML.AutoML.Tests/ColumnInferenceTests.cs
Co-authored-by: Justin Ormont <justinormont@users.noreply.github.com>
Co-authored-by: Justin Ormont <justinormont@users.noreply.github.com>