Patch-package

- Add --create-issue option

- Fix another createPatch bug involving .git folder hygiene (contribution from
gomain in 258)

- Add --error-on-fail cli option
- Collate errors and warnings to avoid exiting early (with help from
akwodkiewicz in 217)
- Fix .dev.patch suffix bug (with help from pdcastro in 224)
- Support build metadata in package.json version strings (with help from
snowystinger in 213)
- Change 'no patch files found' message from red to blue (contribution from
dmhalejr in 211)
- Fix environment variable propogation for spawned tasks (contribution from
chpio in 223)
- Add --patch-dir option to readme (contribution from mikehardy in 225)
- Fix createPatch bug involving .git folder hygiene (contribution from haroenv
in 231)

- Take config from .yarnrc when making patches (contribution from NMinhNguyen
in 222)

- Avoid infinite loop when invoked without package.json
- Fall back to version in package-lock (contribution from bschlenk in 206)
- Add tips about Docker and CI to README (contribution from harriha in 208)
- Remove update notifier (contribution from christianbundy in 196)
- Add github actions checks (contribution from asadm in 186 and DanielRuf in
188, 187)
- Fix url in README (contribution from DanielRuf in 184)
- Upgrade node in CI to 12 (contribution from DanielRuf in 183)

- Add support for dev-only patches (159 again)