Tree API written in go

Implements a tree api which can persists the tree in multiple back ends.

Master:

Name		Name	Last commit message	Last commit date
Latest commit History 20 Commits
api		api
backend		backend
vendor		vendor
.travis.yml		.travis.yml
Makefile		Makefile
README.md		README.md
docker-compose.yml		docker-compose.yml
repository.go		repository.go
root.go		root.go
session.go		session.go
tree.go		tree.go

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