diff --git a/docs/change-log.md b/docs/change-log.md
index a4fb7986..4fc58b58 100644
--- a/docs/change-log.md
+++ b/docs/change-log.md
@@ -1,6 +1,18 @@
 ## Change Log
 
-[v0.1.16](/mithril/archive/v0.1.6) - maintenance
+[v0.1.17](/mithril/archive/v0.1.17) - maintenance
+
+### News:
+
+-	config contexts can now have an `onunload` property for clean up tasks after elements are detached from the document
+
+### Bug Fixes:
+
+-	fixed a subtree directive bug that happened in inputs inside loops
+
+---
+
+[v0.1.16](/mithril/archive/v0.1.16) - maintenance
 
 ### News:
 
diff --git a/mithril.js b/mithril.js
index 986320d3..2922dee7 100644
--- a/mithril.js
+++ b/mithril.js
@@ -34,7 +34,7 @@ Mithril = m = new function app(window) {
 	}
 	function build(parentElement, parentTag, parentCache, parentIndex, data, cached, shouldReattach, index, editable, namespace, configs) {
 		if (data === null || data === undefined) data = ""
-		if (data.subtree === "retain") return
+		if (data.subtree === "retain") return cached
 
 		var cachedType = type.call(cached), dataType = type.call(data)
 		if (cachedType != dataType) {