Changes Version 0.61.1

Released on April 05, 2020 with 24 commits

This is a maintenance release while we're getting ready for the next major version of Unpoly.

• Fix a bug where up.destroy() wouldn't clean up the global jQuery cache. This is only relevant when using Unpoly together with jQuery.
• Fields outside a <form> are now recognized when they have a matching [form] attribute (fixes #85)
• up.form.fields() now accepts a jQuery collection as a first argument, as was already documented.