Refactor struct's time to remove unnecessary memory usage (#3142)
* refactor struct's time to remove unnecessary memory usage
* use AsTimePtr simple code
* fix tests
* fix time compare
* fix template on gpg
* use AddDuration instead of Add
Use created & updated instead BeforeInsert & BeforeUpdate (#2482)
* use created & updated instead BeforeInsert & BeforeUpdate
* fix vendor checksum
* only show generated SQL when development mode
* remove extra update column updated_unix
* remove trace config