Handle case where visitor meta stored in prior releases of WPeC was stored as an array rather than a singular value.
fixed array index
Validate shipping / billing country visitor meta
Does a check of the shipping/billing country meta to be sure that all meta values are stored as individual values rather than array
Merge pull request #1206 from JeffPyeBrook/pr-visitor-meta-backwards-compatibility

Handle case where visitor meta stored by prior releases of WPeC