…d/qa#which-files-should-be-gitignored

… build and test work.

…his branch.

… --immutable. Updating module dependencies to use special "workspace:" syntax. Should remove need to update all package.json Turf dependencies for every Turf release.

…sn't run user defined pre* scripts automatically any more, so pretest, posttest, and postlint have been rolled into their respective "main" tasks. Adding yarn prepare explicitly to github workflow as yarn doesn't seem to call that implicitly as part of install.

…re though think I checked in a copy before that was in place.

…ent dependency of the new yarn version.

…setup-node instead.