Add GitHub Actions for development workflow.

.github/workflows/development.yml

@@ -0,0 +1,45 @@
+name: Development
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ${{matrix.os}}-latest
+    continue-on-error: ${{matrix.experimental}}
+
+    strategy:
+      matrix:
+        os:
+          - ubuntu
+          - macos
+
+        ruby:
+          - 2.5
+          - 2.6
+          - 2.7
+
+        experimental: [false]
+        env: [""]
+
+        include:
+          - os: ubuntu
+            ruby: truffleruby
+            experimental: true
+          - os: ubuntu
+            ruby: jruby
+            experimental: true
+          - os: ubuntu
+            ruby: head
+            experimental: true
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{matrix.ruby}}
+        bundler-cache: true
+
+    - name: Run tests
+      timeout-minutes: 5
+      run: |
+        ${{matrix.env}} bundle exec rspec

README.md

@@ -1,13 +1,14 @@
-## IMPORTANT: If you cannot install Listen (e.g. on Travis/CI builds), [a workaround is here](https://github.com/guard/listen/wiki/Ruby-version-requirements)
-
-:exclamation: Listen is currently accepting more maintainers. Please [read this](https://github.com/guard/guard/wiki/Maintainers) if you're interested in joining the team.
-
 # Listen
 
-[![Gem Version](https://badge.fury.io/rb/listen.svg)](http://badge.fury.io/rb/listen) [![Build Status](https://travis-ci.org/guard/listen.svg)](https://travis-ci.org/guard/listen) [![Code Climate](https://codeclimate.com/github/guard/listen.svg)](https://codeclimate.com/github/guard/listen) [![Coverage Status](https://coveralls.io/repos/guard/listen/badge.svg?branch=master)](https://coveralls.io/r/guard/listen)
-
 The Listen gem listens to file modifications and notifies you about the changes.
 
+:exclamation: Listen is currently accepting more maintainers. Please [read this](https://github.com/guard/guard/wiki/Maintainers) if you're interested in joining the team.
+
+[![Development Status](https://github.com/guard/listen/workflows/Development/badge.svg)](https://github.com/guard/listen/actions?workflow=Development)
+[![Gem Version](https://badge.fury.io/rb/listen.svg)](http://badge.fury.io/rb/listen)
+[![Code Climate](https://codeclimate.com/github/guard/listen.svg)](https://codeclimate.com/github/guard/listen)
+[![Coverage Status](https://coveralls.io/repos/guard/listen/badge.svg?branch=master)](https://coveralls.io/r/guard/listen)
+
 ## Features
 
 * OS-optimized adapters on MRI for Mac OS X 10.6+, Linux, \*BSD and Windows, [more info](#listen-adapters) below.

spec/support/acceptance_helper.rb

@@ -156,7 +156,7 @@ def initialize(callback, paths, *args)
     #
     # The value should be 2-3 x wait_for_delay + time between fs operation and
     # notification, which for polling and FSEvent means the configured latency
-    @lag = Float(ENV['LISTEN_TESTS_DEFAULT_LAG'] || 0.2)
+    @lag = Float(ENV['LISTEN_TESTS_DEFAULT_LAG'] || 1.0)
 
     @paths = paths