Roll a release

[Seth Tisue]

The masses are clamoring for a release of @som-snytt's #177

Should we call it 1.3, or 2.0? What does MiMA think?

[Seth Tisue]

We have not released for Scala 3 yet, only for prereleases. I think calling it 1.3 seems fine.

Once the release is rolled, I should submit a followup PR that updates the MiMa portion of build.sbt.

Note that sbt-version-policy isn't in use in this repo.

[Seth Tisue]

• release: https://github.com/lightbend/lightbend-emoji/releases/tag/1.3.0
• publishing job: https://github.com/lightbend/lightbend-emoji/actions/runs/2757770848

[Seth Tisue]

let the floodgates of Scala 3 adoption now open! https://repo1.maven.org/maven2/com/lightbend/emoji_3/1.3.0/

[Seth Tisue]

followup: #185

[som-snytt]

I forgot to enable -Wvalue-discard.