More MAINTENANCE.md updates.
More MAINTENANCE.md updates.

kevinschaul/nunjucks,oddbird/nunjucks,atorkhov/nunjucks,internalfx/nunjucks,oddbird/nunjucks,devoidfury/nunjucks,kevinschaul/nunjucks,kevinschaul/nunjucks,robgraeber/nunjucks,internalfx/nunjucks,internalfx/nunjucks,atorkhov/nunjucks,kevinschaul/nunjucks,devoidfury/nunjucks,devoidfury/nunjucks,robgraeber/nunjucks,mozilla/nunjucks,atorkhov/nunjucks,atorkhov/nunjucks,robgraeber/nunjucks,oddbird/nunjucks,robgraeber/nunjucks,oddbird/nunjucks,mozilla/nunjucks,mozilla/nunjucks,internalfx/nunjucks