Parsing/Notes/Moving Parsoid Into Core

During the 2016 Parsing Team Offsite, the parsing team decided to evaluate a port of Parsoid into PHP so that it can be integrated into MediaWiki core. That was not a commitment to evaluate that immediately. But, for a bunch of reasons, that evaluation continued to be on the backburner. However, since then, a number of things have transpired which have introduced a lot of momentum behind attempting to move Parsoid into MediaWiki core. On this page, we are going to explore this direction including the why, how, risks and concerns.