Add todo that old bundles should be cleaned up

deployments.go

diff --git a/deployments.go b/deployments.go
index 2f51b09..f618510 100644
--- a/deployments.go
+++ b/deployments.go
@@ -15,6 +15,8 @@
 	"time"
 )
 
+// todo: remove downloaded bundle files from old deployments
+
 const (
 	DOWNLOAD_ATTEMPTS = 3
 )