* (bug 45526) Add QUnit assertion helper "QUnit.assert.htmlEqual" for asserting
structual equality of HTML (ignoring insignificant differences like
quotmarks, order and whitespace in the attribute list).
+* (bug 23393) HTML <hN> headings containing line breaks are now handled
+ correctly.
+* (bug 45803) Whitespace within == Headline == syntax and within <hN> headings
+ is now non-significant and not preserved in the HTML output.
=== Bug fixes in 1.21 ===
* (bug 40353) SpecialDoubleRedirect should support interwiki redirects.