tree 5bd6bb2adb216e03eb4b4ed69f7c9edd1d1b5db3
parent 3c5e09f5e9c56bd6765ca65a98220f15fa46db78
author Victor Vieux <vieux@docker.com> 1478860053 -0800
committer Victor Vieux <vieux@docker.com> 1478860053 -0800

bump version to 1.13.0-rc1

Signed-off-by: Victor Vieux <vieux@docker.com>