Release version 1.0.1

[SethTisue]

The immediate motivation is to make sure that (now that #242 has landed) we have publishing set up correctly on GitHub Actions

But there is also at least one user-visible change, which is that thanks to the sbt-scala-module upgrade we now declare a semantic versioning policy

this time only:

• add secrets to GitHub settings, as per sbt-ci-release readme instructions

usual release steps:

• merge PRs
• choose version number
  • v1.0.1
• tag the release
  • https://github.com/scala/scala-java8-compat/releases/tag/v1.0.1
• wait for release build
  • https://github.com/scala/scala-java8-compat/actions/runs/1284902789
• artifacts on Maven Central
  • https://repo1.maven.org/maven2/org/scala-lang/modules/scala-java8-compat_3/1.0.1/
  • (not a complete list)
• readme updates? build.sbt updates?
  • none

[SethTisue]

the first release build failed, some genjavadoc issue. I deleted the tag. investigating

UPDATE: #246 should take care of it