Hi all,

I noticed that calling `org-element-interpret-data' on objects is generally 5-10x faster than when calling on elements. The reason seems to be that `org-element--interpret-affiliated-keywords' (which is only called on elements) does alot of unnecessary work. Namely, it runs on all elements (including those that should never have an affiliated keyword) and also loops over :standard-properties which should not be relevant here.

The attached patch addresses this.

I also attached some benchmarks pre and post-patch and accompanying code, which shows many elements (specifically those without children) approaching the execution time of objects. For the graphs, just pay attention to the 'org-element' bars (red); the others were from me trying to optimize the `org-ml` package.

Thank you,
Nate