Catch top-level exceptions as well

[lionello]

This will catch (synchronous) exceptions that are thrown at the top-level, by wrapping every call in a promise.

I used the following regex:

([^=].\n                        )(window\.crypto\.subtle\.[^<]+?)(\n                        \.then)

\1Promise.resolve().then(function(){\n                            return \2;\n                        })\3