Added Babel to the build pipeline to repair IE 11 support.
2.2
:boom: Breaking change. Changed jQuery consumption mechanics to ES6 import as opposed to old-fashined import via
<script> tag.
:boom: Breaking change. Changed jWidget compilation target to es2015 to enable async/await support (it however requires the dependent
projects to integrate Babel now - project template is updated).
:boom: Breaking change. Destruction order of Map and Set with item owning flag is no longer reversed (to avoid
memory and performance penalty).
Changed license to MIT.
Fixed a mistake in absolute root endpoint handling.