Upgrade to 3.5.4

asottile · asottile · commit 7dcad34255a7 · 2018-04-25T08:19:59.000-07:00
diff --git a/libsass b/libsass
@@ -1 +1 @@
-Subproject commit 8a6ba8ff8133f7d8d8f79daf68b9cd3102f0b42b
+Subproject commit 1e52b74306b7d73a617396c912ca436dc55fd4d8
