The previous approach causes problems when there are e.g. newlines in the pull
request body. Also, the `draft` parameter was previously passed as a JSON
string (`"draft": "true"` and `"draft": "false"`, as opposed to `"draft": true`
and `"draft": false`), which I suspect is just a bug.
* initial effort to add draft PRs
Document how to use draft PR feature
* make PRs draft anytime env var is explicitly declared
* change draft PR env var name
Signed-off-by: Ben Cooper <bencooper222@gmail.com>
* document new draft env var name
* consolidate draft PR logging block
* actually remove draft pr logging