Purge the HTML output folder before writing
Deduplicate method aliases within classes.

Also made some other minor formatting changes.

Functions within modules aren't yet deduplicated; I'll be generalizing the method-related code soon.
Don't collapse "Members inherited from" blocks for now.

I don't like the collapsed way because long member lists that wrap around look ugly, but I don't like the non-collapsed way because it takes up so much real estate. I'll leave it as is for now and change it later, possibly into a table or something.
New version