It's interesting that this appears based on Wagner and Graham's papers/work. A bunch of that was eventually open sourced, but for years it was very state of t

It's interesting that this appears based on Wagner and Graham's papers/work. A bunch of that was eventually open sourced, but for years it was very state of the art for incremental parsing, but imho languishing, because all the implementations were closed[1] [1] ensemble, pan, etc.