TODO:
/**
* Redirect to a different page based on a condition (if provided).
*
*
* @example
*
* # 1: Redirect to a URL.
*
* {{goto url="/preview/?{{$post.post_permalink}}"}}
*
*
* # 2: Redirect to coming soon page when access product page.
*
* {{goto key="{{$post.post_name}}" condition="equal" value="product" url="/coming-soon/"}}
*
*
* # 3: Redirect to product page if anything else.
*
* {{goto key="{{$post.post_name}}" condition="not" value="product" url="/product/"}}
*
*
* # 4: Redirect to page if page URL contains a keyword.
*
* {{goto key="{{$post.post_permalink}}" condition="match" value="/free/" url="/promotion/"}}
*
*
* # 5: Force redirect after certain date.
*
* {{goto key="{{date format='Y-m-d'}}" condition="match" value="2017-02-28" url="/order-now/"}}
*
*
*
*/