add: IDManager same type elements handling and some minor fixes; #77

	name: Run gradle tests

	on: [ push, pull_request, workflow_dispatch ]

	permissions:
	contents: read

	concurrency:
	group: ${{ github.event_name }}-${{ github.ref }}-gradle
	cancel-in-progress: true

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Set up JDKs
	uses: actions/setup-java@v4
	with:
	java-version: \|
	16
	8
	distribution: 'zulu'
	- name: Grant execute permission for gradlew
	run: chmod +x gradlew
	- name: Run all tests headless
	uses: GabrielBB/xvfb-action@v1
	with:
	run: ./gradlew test --info --stacktrace
	env:
	MCIGT_HAS_DISPLAY: true

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