For example, if router.go of main uses trie package in a subdir, I tried gopkg.in/GlassyMedia/go-json-rest/trie.v1 but it doesn't seem to work. Is this feature available?

I can send in a pull request if you point me in the right direction on how to patch it.

├── router.go
├── router_benchmark_test.go
├── router_test.go
├── status.go
├── status_test.go
├── test
│   └── util.go
├── timer.go
└── trie
    ├── impl.go
    └── impl_test.go