chore: switch to github actions

- add support for ruby >= 3.0
- from ruby 3.0 on rexml is a gem

Author: monora

.github/workflows/ruby.yml

@@ -0,0 +1,33 @@
+# See https://github.com/ruby/setup-ruby
+name: Test
+
+on:
+  push:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version:
+          - '2.6'
+          - '2.7'
+          - '3.0'
+          - '3.1'
+          - ruby-head
+          - jruby-head
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+    - name: Run tests
+      run: bundle exec rake test

.travis.yml

@@ -1,3 +1,8 @@
+2022-06 Release 0.5.8
+
+Horst Duchene
+ * switch to github actions (56030d)
+
 2020-12 Release 0.5.7
 
 Horst Duchene

ChangeLog

@@ -1,4 +1,4 @@
-# Ruby Graph Library (RGL) [<img src="https://secure.travis-ci.org/monora/rgl.png?branch=master" alt="Build Status" />](https://travis-ci.org/monora/rgl) [<img src="https://codeclimate.com/github/monora/rgl/badges/coverage.svg" />](https://codeclimate.com/github/monora/rgl/coverage) [<img src="https://badge.fury.io/rb/rgl.svg" alt="Version"/>](https://badge.fury.io/rb/rgl)[![Gitpod ready-to-code](https://img.shields.io/badge/Gitpod-ready--to--code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/monora/rgl)
+# Ruby Graph Library (RGL) [![test](https://github.com/monora/rgl/actions/workflows/ruby.yml/badge.svg)](https://github.com/monora/rgl/actions/workflows/ruby.yml) [<img src="https://codeclimate.com/github/monora/rgl/badges/coverage.svg" />](https://codeclimate.com/github/monora/rgl/coverage) [<img src="https://badge.fury.io/rb/rgl.svg" alt="Version"/>](https://badge.fury.io/rb/rgl) [![Gitpod ready-to-code](https://img.shields.io/badge/Gitpod-ready--to--code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/monora/rgl)
 
 RGL is a framework for graph data structures and algorithms.
 

README.md

@@ -4,7 +4,7 @@
 # library. The main module is RGL::Graph which defines the abstract behavior of
 # all graphs in the library.
 
-RGL_VERSION = "0.5.7"
+RGL_VERSION = "0.5.8"
 
 module RGL
   class NotDirectedError < RuntimeError; end

lib/rgl/base.rb

@@ -12,6 +12,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency 'stream',     '~> 0.5.3'
   s.add_dependency 'lazy_priority_queue', '~> 0.1.0'
+  s.add_dependency 'rexml', '~> 3.2', '>= 3.2.4'
 
   s.add_development_dependency 'rake'
   s.add_development_dependency 'yard'