Rename reflection proxy elements
Add TypeProxy class supporting GetCustomAttributesData() delegation
Hide event members

COM events don't import correctly as first-class events in F#, as it
expects the first parameter to be the "sender", a convention COM
does not follow. Therefore, we hide the actual event members and only
expose the add / remove handler methods.
Add documentation strings for event add / remove handler methods
Clean up trailing whitespace
Filter out .NET type libraries from the list
Better error message when attempting to access a typelib with a PIA