feat: add 'replace_output' props to plugin, allowing plugins to modif… #167

Job	Run time
build-and-test (windows-latest, 18.x)	5m 7s
build-and-test (ubuntu-latest, 18.x)	5m 1s
build-and-test (ubuntu-latest, 20.x)	5m 5s
build-and-test (macos-latest, 20.x)	5m 19s
build-and-test (macos-latest, 18.x)	5m 19s
build-and-test (windows-latest, 20.x)	5m 8s
	30m 59s

Provide feedback