Modernize continuous integration system

.codespellrc

@@ -0,0 +1,7 @@
+# See: https://github.com/codespell-project/codespell#using-a-config-file
+[codespell]
+# In the event of a false positive, add the problematic word, in all lowercase, to a comma-separated list here:
+ignore-words-list = wan
+check-filenames =
+check-hidden =
+skip = ./.git

.github/dependabot.yml

@@ -0,0 +1,10 @@
+# See: https://docs.github.com/en/github/administering-a-repository/configuration-options-for-dependency-updates#about-the-dependabotyml-file
+version: 2
+
+updates:
+  # Configure check for outdated GitHub Actions actions in workflows.
+  # See: https://docs.github.com/en/github/administering-a-repository/keeping-your-actions-up-to-date-with-dependabot
+  - package-ecosystem: github-actions
+    directory: / # Check the repository's workflows under /.github/workflows/
+    schedule:
+      interval: daily

.github/workflows/check-arduino.yml

@@ -0,0 +1,28 @@
+name: Check Arduino
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+  pull_request:
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch breakage caused by new rules added to Arduino Lint.
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Arduino Lint
+        uses: arduino/arduino-lint-action@v1
+        with:
+          compliance: specification
+          library-manager: update
+          # Always use this setting for official repositories. Remove for 3rd party projects.
+          official: true
+          project-type: library

.github/workflows/compile-examples.yml

@@ -4,16 +4,24 @@ on:
   pull_request:
     paths:
       - ".github/workflows/compile-examples.yml"
+      - "library.properties"
       - "examples/**"
       - "src/**"
   push:
     paths:
       - ".github/workflows/compile-examples.yml"
+      - "library.properties"
       - "examples/**"
       - "src/**"
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch breakage caused by changes to external resources (libraries, platforms).
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
 
 jobs:
   build:
+    name: ${{ matrix.board.fqbn }}
     runs-on: ubuntu-latest
 
     env:
@@ -77,9 +85,7 @@ jobs:
                 source-url: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
 
     steps:
-      - uses: actions/checkout@v1
-        with:
-          fetch-depth: 1
+      - uses: actions/checkout@v2
 
       # It's necessary to checkout the platform before installing it so that the ArduinoCore-API dependency can be added
       - name: Checkout ArduinoCore-mbed
@@ -110,7 +116,7 @@ jobs:
         run: pip3 install pyserial
 
       - name: Compile examples
-        uses: arduino/compile-sketches@main
+        uses: arduino/compile-sketches@v1
         with:
           platforms: ${{ matrix.platforms }}
           fqbn: ${{ matrix.board.fqbn }}
@@ -121,7 +127,8 @@ jobs:
 
       - name: Save memory usage change report as artifact
         if: github.event_name == 'pull_request'
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v2
         with:
+          if-no-files-found: error
           name: ${{ env.SKETCHES_REPORTS_PATH }}
           path: ${{ env.SKETCHES_REPORTS_PATH }}

.github/workflows/report-size-deltas.yml

@@ -1,13 +1,21 @@
 name: Report PR Size Deltas
 
 on:
+  push:
+    paths:
+      - ".github/workflows/report-size-deltas.yml"
   schedule:
     - cron:  '*/5 * * * *'
+  workflow_dispatch:
+  repository_dispatch:
 
 jobs:
   report:
     runs-on: ubuntu-latest
 
     steps:
       - name: Comment size deltas reports to PRs
-        uses: arduino/actions/libraries/report-size-deltas@master
+        uses: arduino/report-size-deltas@v1
+        with:
+          # The name of the workflow artifact created by the sketch compilation workflow
+          sketches-reports-source: sketches-reports

.github/workflows/spell-check.yml

@@ -1,14 +1,22 @@
 name: Spell Check
-on: [push, pull_request]
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+  pull_request:
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch new misspelling detections resulting from dictionary updates.
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
 jobs:
- build:
-   runs-on: ubuntu-latest
+  spellcheck:
+    runs-on: ubuntu-latest
 
-   steps:
-     - uses: actions/checkout@v1
-       with:
-         fetch-depth: 1
-     - uses: arduino/actions/libraries/spell-check@master
-       with:
-         ignore-words-list: extras/codespell-ignore-words-list.txt
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
 
+      - name: Spell check
+        uses: codespell-project/actions-codespell@master

README.md

@@ -1,8 +1,9 @@
 Arduino Library for network connections management
 ==================================================
-![](https://github.com/arduino-libraries/Arduino_ConnectionHandler/workflows/Compile%20Examples/badge.svg)
-![](https://github.com/arduino-libraries/Arduino_ConnectionHandler/workflows/Spell%20Check/badge.svg)
 
+[![Check Arduino status](https://github.com/arduino-libraries/Arduino_ConnectionHandler/actions/workflows/check-arduino.yml/badge.svg)](https://github.com/arduino-libraries/Arduino_ConnectionHandler/actions/workflows/check-arduino.yml)
+[![Compile Examples status](https://github.com/arduino-libraries/Arduino_ConnectionHandler/actions/workflows/compile-examples.yml/badge.svg)](https://github.com/arduino-libraries/Arduino_ConnectionHandler/actions/workflows/compile-examples.yml)
+[![Spell Check status](https://github.com/arduino-libraries/Arduino_ConnectionHandler/actions/workflows/spell-check.yml/badge.svg)](https://github.com/arduino-libraries/Arduino_ConnectionHandler/actions/workflows/spell-check.yml)
 
 Library for handling and managing network connections by providing keep-alive functionality and automatic reconnection in case of connection-loss. It supports the following boards:
 * **WiFi**: [`MKR 1000`](https://store.arduino.cc/arduino-mkr1000-wifi), [`MKR WiFi 1010`](https://store.arduino.cc/arduino-mkr-wifi-1010), [`Nano 33 IoT`](https://store.arduino.cc/arduino-nano-33-iot), `ESP8266`