Improved smart_punct.txt.
See jgm/commonmark.js#61
diff --git a/test/smart_punct.txt b/test/smart_punct.txt
index ac13a26..7dd9394 100644
--- a/test/smart_punct.txt
+++ b/test/smart_punct.txt
@@ -58,6 +58,14 @@
<p>’tis the season to be ‘jolly’</p>
.
+Multiple apostrophes should not be marked as open/closing quotes.
+
+.
+'We'll use Jane's boat and John's truck,' Jenna said.
+.
+<p>‘We’ll use Jane’s boat and John’s truck,’ Jenna said.</p>
+.
+
An unmatched double quote will be interpreted as a
left double quote, to facilitate this style:
