Update to Play 3.x. Drop Scala 2.12 support. #19

	name: Continuous integration
	on:
	push:
	branches: ["main"]
	pull_request:
	branches: ["main"]

	jobs:
	ci:
	runs-on: ubuntu-20.04
	env:
	SBT_NATIVE_CLIENT: true
	steps:
	- uses: actions/[email protected]
	with:
	fetch-depth: 0
	- uses: olafurpg/setup-scala@v14
	with:
	java-version: [email protected]
	- uses: coursier/[email protected]
	- uses: coursier/setup-action@v1
	with:
	apps: cs
	- run: "cs launch org.endpoints4s::stub-server:2.1.0 &"
	- name: Scala 2.13 tests
	run: sbt "++ 2.13 test"
	- name: Scala 3 tests
	run: \|
	sbt "++ 3.3 ;coverage; test; coverageReport; coverageAggregate"
	bash <(curl -s https://codecov.io/bash)
	- name: Version Policy Check
	run: sbt versionPolicyCheck
	- name: Code formatting
	run: sbt scalafmtCheck

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