Date field settings hardcoded in createNode function

Thanks for this module, great initiative!

When importing date fields in createNode function it assumes that the date field saves both date and time (line 276-277 in ContentImport.php). However in the date field setting a person can choose to only save the dates;

Instead of making assumptions about what field settings the user has, you should check what field settings that is use for the date field for the content type that is actually being imported.