Chengmin

Results 3 issues of Chengmin

Fix #44 - Added `inSameParent` arg to the previous and next post|page|cpt. - Updated logic to determine next|previous post.

### Implemented Scroll Snapping by JS (fix #12 ) - New HTML attributes `snap` and `snap-length` ``` scroll content scroll content scroll content scroll content ``` - New setting options...

SQL query to get the latest order for a user was incorrect and it caused an issue with refund.