feat: allow the tag message to appear as the title of releases in change log

[gilesbradshaw]

if you set

{
  "tagMessageInChangeLog": true
}

in .versionrc

and run standard commit with a tag message (or accept the default)

standard-version  --releaseCommitMessageFormat 'the final final version!'

you get the tag commit message for the release in the change log:

0.0.26 "the final final version" (2020-08-05)

[TimothyJones]

Hi there! Since standard-version is deprecated, I've forked it here. I'd like to accept this change into the fork, but the PR includes a changelog for some reason, and it could do with some documentation for the new feature.

If you're still keen to see this released, would you be able to submit a PR against the commit-and-tag-version fork?