drop travis, switch to workflows

.github/workflows/static-analysis.yml

@@ -0,0 +1,22 @@
+name: Static Analysis (informative)
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  phpstan:
+    name: PHPStan
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.0
+          coverage: none
+
+      - run: composer install --no-progress --prefer-dist
+      - run: composer require phpstan/phpstan --no-progress --dev
+      - run: vendor/bin/phpstan analyse src/
+        continue-on-error: true # is only informative

.github/workflows/tests.yml

@@ -0,0 +1,41 @@
+name: Tests
+
+on: [push, pull_request]
+
+jobs:
+
+  phpunit:
+    runs-on: ubuntu-18.04
+    strategy:
+      fail-fast: false
+      matrix:
+        php-version: ['7.3', '7.4', '8.0']
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 1
+
+      - run: php${{ matrix.php-version }} -v
+      - run: php${{ matrix.php-version }} -m
+      - run: composer -V
+      - run: composer install --no-progress
+      - run: php${{ matrix.php-version }} vendor/bin/phpunit
+
+  code_coverage:
+    name: Code Coverage
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.0
+          coverage: none
+
+      - run: composer install --no-progress
+      - run: mkdir -p build/logs
+      - run: phpdbg -qrr vendor/bin/phpunit
+      - run: wget https://github.com/php-coveralls/php-coveralls/releases/download/v2.4.3/php-coveralls.phar
+      - env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: php php-coveralls.phar --verbose

README.md

@@ -1,4 +1,4 @@
-# php-keccak [![Build Status](https://travis-ci.org/kornrunner/php-keccak.svg?branch=master)](https://travis-ci.org/kornrunner/php-keccak) [![Build status](https://ci.appveyor.com/api/projects/status/48isd8g6gov29wba/branch/master?svg=true)](https://ci.appveyor.com/project/kornrunner/php-keccak/branch/master) [![Coverage Status](https://coveralls.io/repos/github/kornrunner/php-keccak/badge.svg?branch=master)](https://coveralls.io/github/kornrunner/php-keccak?branch=master) [![Latest Stable Version](https://poser.pugx.org/kornrunner/keccak/v/stable)](https://packagist.org/packages/kornrunner/keccak)
+# php-keccak [![Build status](https://ci.appveyor.com/api/projects/status/48isd8g6gov29wba/branch/master?svg=true)](https://ci.appveyor.com/project/kornrunner/php-keccak/branch/master) [![Coverage Status](https://coveralls.io/repos/github/kornrunner/php-keccak/badge.svg?branch=master)](https://coveralls.io/github/kornrunner/php-keccak?branch=master) [![Latest Stable Version](https://poser.pugx.org/kornrunner/keccak/v/stable)](https://packagist.org/packages/kornrunner/keccak)
 Pure PHP implementation of Keccak (SHA-3)
 
 ## Usage