Question: Do you have a plan to update codes from mattn/go-sqlite3?

Do you have a plan to update codes from mattn/go-sqlite3?

I wanna use this method.
```go
// from mattn/go-sqlite3
func (c *SQLiteConn) RegisterFunc(name string, impl interface{}, pure bool) error
```
https://github.com/mattn/go-sqlite3/blob/2a192bf7823799e082cfa3380aab9f02e4d312c0/sqlite3.go#L551


