Add the <t> element and ignore whitespace outside it.

sky/tests/parser/whitespace-expected.txt

Index: sky/tests/parser/whitespace-expected.txt
diff --git a/sky/tests/parser/whitespace-expected.txt b/sky/tests/parser/whitespace-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e0b75ffca6c3d4e74010eb9dabf2db0e34e38df6
--- /dev/null
+++ b/sky/tests/parser/whitespace-expected.txt
@@ -0,0 +1,28 @@
+<sky>
+  <import src="../resources/dump-as-markup.sky"></import>
+  <t>
+  <span>
+    A
+    <div>
+      <span></span>
+
+          
+
+
+      <span></span>
+    </div>
+  </span>
+
+
+  
+
+  <span>B</span>
+</t>
+  <div>
+    <span>
+    A
+  </span>
+    <span>B</span>
+  </div>
+</sky>
+