This exposes two broken tests:
* #setCount (Eastern Arabic numerals)
* clicking on the product of createBanner() should trigger a custom event
that were previously passing due to buggy assertions.
Change-Id: If18ad1ff9363fff65d3e347c01ce4bc0669b2a0e
stylelint is part of config, but not run by default
Also update to 0.4.1, it is the current default in many wmf extensions
Change-Id: I55f81489182628c088e362e081417514e252e6d6