* build: fix doc only change when there isn't a PR
Fixes issue where CI was mistakenly marking a PR as a doc only change because the CI was kicked off before the PR was created.
* ci: skip build on doc only changes
* Try using exit codes on doc-only-change
* Fixup
* Fixup circleci doc-only check
* Update appveyor.yml
Co-Authored-By: Samuel Attard <sattard@slack-corp.com>
* Properly detect doc only change on Windows
* Flip exit code per review
