[meta] Update Powerline and Prezto
diff --git a/src/powerline b/src/powerline
index 6eaa6405..4d1b8e43 160000
--- a/src/powerline
+++ b/src/powerline
@@ -1 +1 @@
-Subproject commit 6eaa640577fbf83d76b50e4e4c0bd9179e908e62
+Subproject commit 4d1b8e43ad824d48cf9731eaa6a8bf28f4fb2471
diff --git a/src/prezto b/src/prezto
index b17da8b6..fe8b3188 160000
--- a/src/prezto
+++ b/src/prezto
@@ -1 +1 @@
-Subproject commit b17da8b664fa784576c799ca27d93285dc16e37b
+Subproject commit fe8b318872d8d710599fe71627d75326d96cccf5