Merge pull request #563 from bduggan/patch-2

Object elements can be separated by comma or newline

Author: alisdair

hclsyntax/spec.md

@@ -268,10 +268,10 @@ collection value.
 ```ebnf
 CollectionValue = tuple | object;
 tuple = "[" (
-    (Expression ("," Expression)* ","?)?
+    (Expression (("," | Newline) Expression)* ","?)?
 ) "]";
 object = "{" (
-    (objectelem ("," objectelem)* ","?)?
+    (objectelem (( "," | Newline) objectelem)* ","?)?
 ) "}";
 objectelem = (Identifier | Expression) ("=" | ":") Expression;
 ```