Win cURL

Downloading a version of cURL if we're running in win32 so we can run the upload task on windows. Also makes githubRelease depend on 'build' and adds 'experience' as a tag for release notes.

If you want to test this, and run the gitHubRelease task, you'll need to immediately delete the archive uploaded in GitHub. It might be best to test it in CI once this is merged to develop.