fix syntax-rules + Pair::toSring #43

syntax-rules to transform (a b ...) on single item
fix repr of (cons 1 undefined)

CHANGELOG.md

@@ -18,6 +18,8 @@
 * fix silent accepting two big code point `#\xFFFFFF`
 * fix custom repr of instances created by define-class
 * fix parsing R7RS hex literals in strings
+* fix syntax-rules with `(a b ...)` that match single item
+* fix swallowed undefined from `(cons 1 undefined)`
 
 ## 1.0.0-beta.3
 ## Bugfix

README.md

@@ -2,7 +2,7 @@
 
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