fix: ignore marketplace pending* events

fix: pass installation payload to handlePullRequest when handling an …

…installation change

test: adapt for retries

feat: deprecate support for legacy commit status support

ci: deploy to beta

feat: always return 'pro' for GitHub Enterprise (wip#189)

chore(package): update lockfile package-lock.json

fix(package): Probot 8

fix: Status message when a label is matched

fix: update to latest Probot. Fixes issue with redis connections