add section about trace logging
add section about trace logging

mousesun/gorp,GeertJohan/gorp,kevinc0825/gorm,coopernurse/gorp,rickb777/gorp-old2,kevinc0825/gorm,jmoiron/modl,losinggeneration/gorp,kimxilxyong/gorp,go-gorp/gorp,gabelula/gorp,rickb777/gorp-old2,yp-engineering/gorp,GeertJohan/gorp,coopernurse/gorp,xiaoenai/gorp,go-gorp/gorp,d-g-laptev/gorp,xiaoenai/gorp,cortex/gorp,gabelula/gorp,kimxilxyong/gorp,evenco/gorp,losinggeneration/gorp,cortex/gorp,evenco/gorp,d-g-laptev/gorp,outdoorsy/gorp,japettyjohn/modl,jmoiron/modl,japettyjohn/modl,mousesun/gorp,yp-engineering/gorp,outdoorsy/gorp