Editor: IE 11 now supports `Node.textContent`.
Editor: IE 11 now supports `Window.getSelection()`.
Editor: Exclusion of IE 11 in `should fail` and `should error` testing conditions.
Editor: Simplification of several boolean expressions.
Editor: Simplication of a boolean expression.
Editor: Update history.
Merge branch 'editor-fix-part-2' into release-3.14.1