Use azp for cross-platform support for now

.azure-pipelines.yml

@@ -0,0 +1,40 @@
+trigger:
+- master
+- features/*
+
+jobs:
+- job: Tests
+  displayName: Run tests
+  strategy:
+    matrix:
+      linux:
+        imageName: 'ubuntu-16.04'
+      mac:
+        imageName: 'macos-10.13'
+      windows:
+        imageName: 'vs2017-win2016'
+  pool:
+    vmImage: $(imageName)
+
+  steps:
+  - task: NodeTool@0
+    inputs:
+      versionSpec: "10"
+
+  - script: npm install
+
+  - script: npm test
+
+- job: Lint
+  displayName: Linting
+  pool:
+    vmImage: 'ubuntu-16.04'
+
+  steps:
+  - task: NodeTool@0
+    inputs:
+      versionSpec: "10"
+
+  - script: npm install
+
+  - script: npm run format-check

.github/main.workflow

@@ -1,27 +0,0 @@
-workflow "CI" {
-  on = "push"
-  resolves = ["Format", "Build", "Test"]
-}
-
-action "Dependencies" {
-  uses = "actions/npm@v2.0.0"
-  args = "install"
-}
-
-action "Build" {
-  needs = "Dependencies"
-  uses = "actions/npm@v2.0.0"
-  args = "run build"
-}
-
-action "Format" {
-  needs = "Dependencies"
-  uses = "actions/npm@v2.0.0"
-  args = "run format-check"
-}
-
-action "Test" {
-  needs = "Dependencies"
-  uses = "actions/npm@v2.0.0"
-  args = "test"
-}