v0.21.0: PR #2235 - Bump version to v0.21.0

v0.20.3: PR #1977 - Include stderr in the error message if we run git…

… command

v0.20.2: PR #1914 - Bump up version to v0.20.2

v0.20.1: PR #1835 - Fix filtering with github-[pr-]check reporter

v0.20.0: PR #1826 - Bump up version to v0.19.0

v0.19.0: PR #1826 - Bump up version to v0.19.0

v0.18.1: PR #1797 - Bump up version to v0.18.1

v0.18.0: PR #1790 - Bump up version to v0.18.0

v0.17.5: PR #1761 - Bump version to v0.17.5

v0.17.4: PR #1719 - Bump up version to v0.17.4