Fix#1606, which went stale and is now reopened. PR #4806 supplied support for some Number Formats for Ods, but did not directly address this issue. This PR does. In addition to the original issue, this could be useful for zip codes. As I stated in 4806, I may be amenable to adding some unsupported styles to the built-in list, but the custom style option will always be around in case I am being slow or unreasonable.
oleibman