Remove a use of global $ that prevented Unpoly from being used with with jQuery.noConflict().
Fix a bug where replacing the <body> element would lose the body class and other attributes
Fix a bug where Unpoly would set the document title to a <title> tag of an inline SVG image.
Incompatible changes
Drop support for IE 9, which hasn't been supported on any platform since January 2016.
Drop support for IE 10, which hasn't been supported since January 2016 on any platform except
Windows Vista, and Vista is end-of-life in April 2017.
Upgrading
If you're upgrading from an older Unpoly version you should load unpoly-migrate.js
to polyfill deprecated APIs.
Changes handled by unpoly-migrate.js are not considered breaking changes.
