diff --git a/header.php b/header.php
index 2cb13efc..c215b9b2 100644
--- a/header.php
+++ b/header.php
@@ -11,13 +11,30 @@
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diff --git a/src/glslCanvas b/src/glslCanvas
index 4d5e073b..1eee7577 160000
--- a/src/glslCanvas
+++ b/src/glslCanvas
@@ -1 +1 @@
-Subproject commit 4d5e073bf135692178d7cb62b5cc32dac2dae19f
+Subproject commit 1eee7577fb95292851813c6d7359fed01134be19
diff --git a/src/parsedown b/src/parsedown
index 490a8f35..28774a43 160000
--- a/src/parsedown
+++ b/src/parsedown
@@ -1 +1 @@
-Subproject commit 490a8f35a4163f59230f53c34f1fbb22a864c01e
+Subproject commit 28774a4359120d2e02e8b6285ed05670c1bc7053
diff --git a/thumb.png b/thumb.png
new file mode 100644
index 00000000..c4137008
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