Currently, protobuf-dt automatically adds '[packed = true]' as part of the "smart semicolon" command for all repeated fields. This option should be available only to repeated fields of primitive type.

I first need to learn what is a primitive type.

Added Milestone-ReleasePublicBeta label.

This issue should be fixed before we make the plug-in available internally.

Both "smart semicolon" command and content assist now check that the property is repeated and primitive before inserting or proposing 'packed=true'.