make tail.go its own package, independent of logyard
make tail.go its own package, independent of logyard

davidsansome/tail,masahide/tail,ando-masaki/tail,ekini/tail,GeertJohan/tail,funkygao/tail,bububa/tail,araddon/tail,GeertJohan/tail,bfitzsimmons/tail,ActiveState/tail,QLeelulu/tail,mathpl/tail,wfxiang08/tail,funkygao/tail,wrouesnel/tail,vektra/tail,flynn/tail,rakutentech/tail,liyam/tail,42wim/tail,bububa/tail,bcandrea/tail,dim/tail,dim/tail,deepakm/tail,mathpl/tail,miraclesu/tail,walmartlabs/tail