In this commit I added support to match the version when it is enclosed
in quotes (Example: REVIEWDOG_VERSION = "v0.1.0"). I also added support
for version tags that contain a - annotation text (example: REVIEWDOG=v0.1.0-nightly20201208+12faa31).
You can check out the regex syntax on https://regex101.com/r/t1JcmL/10.
This change excludes needless prefix (e.g. "redpen-" of "redpen-1.10.4"
tag) for latest release.
Also, exclude prerelease version (any suffix) in tag explicitly.
Fix#10