Add azure pipelines definition

.azure-pipelines.yml

@@ -0,0 +1,60 @@
+name: $(Build.SourceBranch)-$(date:yyyyMMdd)$(rev:.r)
+trigger:
+  branches:
+    include:
+    - '*'
+
+jobs:
+- job: Build
+  strategy:
+    matrix:
+      windows-stable:
+        imageName: 'vs2017-win2016'
+        rustup_toolchain: stable
+      linux-stable:
+        imageName: 'ubuntu-16.04'
+        rustup_toolchain: stable
+      mac-stable:
+        imageName: 'macos-10.14'
+        rustup_toolchain: stable
+
+  pool:
+    vmImage: $(imageName)
+
+  steps:
+    - checkout: self
+    - script: |
+        curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain $RUSTUP_TOOLCHAIN
+        echo "##vso[task.setvariable variable=PATH;]$PATH:$HOME/.cargo/bin"
+        export PATH=$PATH:$HOME/.cargo/bin
+        rustup update $RUSTUP_TOOLCHAIN
+        rustup default $RUSTUP_TOOLCHAIN
+        rustc --version
+      displayName: Install rust (*nix)
+      condition: ne( variables['Agent.OS'], 'Windows_NT' )
+    - script: |
+        rustup update %RUSTUP_TOOLCHAIN%
+        rustup default %RUSTUP_TOOLCHAIN%
+        rustc --version
+      displayName: Install rust (Win)
+      condition: eq( variables['Agent.OS'], 'Windows_NT' )
+    - script: |
+        rustup component add --toolchain stable rustfmt-preview
+        rustup component list --toolchain stable
+      displayName: Add rustfmt
+    - script: |
+        powershell -Command "$ProgressPreference = 'SilentlyContinue'; iwr -outf %TEMP%\LLVM-8.0.0-win64.exe https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/LLVM-8.0.0-win64.exe"
+        %TEMP%\LLVM-8.0.0-win64.exe /S /NCRC
+      condition: eq(variables['Agent.OS'], 'Windows_NT')
+      displayName: Install clang (Win)
+    - script: cargo fetch
+      displayName: Fetch cargo dependencies
+    - script: cargo +stable fmt --all -- --check
+      displayName: Check formatting
+    - script: cargo build --release
+      displayName: Cargo build release
+    - script: cargo build
+      displayName: Cargo build
+    - bash: RUST_BACKTRACE=1 cargo test --all
+      displayName: Cargo test
+