Mangle name of exception when --screw-ie8. Fix #430....The effect of not mangling it was visible only with --screw-ie8 (otherwise
the names would be mangled exactly because they leaked into the parent
scope).
Mihai Bazon
2014-02-08
Add option `keep_fargs`....By default it's `false`. Pass `true` if you need to keep unused function
arguments.
Close #188.