Improve support for Range mutations. We have over 3000 failures on the following web-platform-test: http://w3c-test.org/dom/ranges/Range-mutations.html Firefox is passing 100%. A lot of the failures seem related to our implementation of the Selection API not matching the specification: - https://www.w3.org/TR/selection-api/#idl-def-Selection
We are now passing all as well with Live Range Selection API - https://wpt.fyi/results/dom/ranges?label=master&label=experimental&aligned&q=range-mutations Marking this as "RESOLVED CONFIGURATION CHANGED".