Upgrade sqlite and logger

Initalize conn properly

Fix an issue related to json and time.Time

Add a way to encode struct and ptr struct to JSON field automatically

Add a way to load struct from json

Revert - and add condition

Provide an error

Add Exec for quick access to database conn

Put and Get time as UTC

Update dependencies: zombiezen.com/go/sqlite v1.3.0 -> v1.4.0