Bump libcompose and its dependencies

vendor/github.com/docker/engine-api/client/container_stats.go

@@ -0,0 +1,24 @@
+package client
+
+import (
+	"io"
+	"net/url"
+
+	"golang.org/x/net/context"
+)
+
+// ContainerStats returns near realtime stats for a given container.
+// It's up to the caller to close the io.ReadCloser returned.
+func (cli *Client) ContainerStats(ctx context.Context, containerID string, stream bool) (io.ReadCloser, error) {
+	query := url.Values{}
+	query.Set("stream", "0")
+	if stream {
+		query.Set("stream", "1")
+	}
+
+	resp, err := cli.get(ctx, "/containers/"+containerID+"/stats", query, nil)
+	if err != nil {
+		return nil, err
+	}
+	return resp.body, err
+}