[dev-context] CGModules update: lua-widow-control version v2.1.0 published.

Max Chernoff submitted an update to the lua-widow-control package. Version number: v2.1.0 License type: Mozilla Public License v2.0 Wants to be in ConTeXt distribution: yes Wants to be synced with CTAN: yes Summary description: Automatically remove widows and orphans from any document Announcement text: ---------------------------------------------------------------------- - Fully support grid snapping in ConTeXt - New warnings when a new widow/orphan is inadvertently created - Significant internal rewrites - Add Plain and OpTeX interfaces to `\nobreak` behaviour and debug mode ----------------------------------------------------------------------