Rebase changes

go.mod

go.sum

main.go

server/config.go

server/core_notification.go

vendor/github.com/jackc/pgio/.travis.yml

vendor/github.com/jackc/pgio/README.md

vendor/github.com/jackc/pgio/doc.go

vendor/github.com/jackc/pgio/write.go

vendor/github.com/jackc/pgtype/aclitem.go

vendor/github.com/jackc/pgtype/aclitem_array.go

vendor/github.com/jackc/pgtype/array.go

vendor/github.com/jackc/pgtype/bit.go

vendor/github.com/jackc/pgtype/bool.go

vendor/github.com/jackc/pgtype/bool_array.go

vendor/github.com/jackc/pgtype/box.go

vendor/github.com/jackc/pgtype/bpchar.go

vendor/github.com/jackc/pgtype/bpchar_array.go

vendor/github.com/jackc/pgtype/bytea.go

vendor/github.com/jackc/pgtype/bytea_array.go