Removed class auto-seal. It creates some issues with global AS functions (it is not expected to measurably improve performance).
Fixes for the IL inliner. It does not seem to work as expected and may not be the right effort anyway, but this makes the code "better".
Added Invoker class to optimize some cases of dynamic invocation.
    Think of it as a functor with pre-recorded arguments (that can be overridden).
    In some cases, it can help with default and variadic arguments, and it will be used by the EventDispatcher.