diff --git a/README.md b/README.md
index 53bf6343..07e1b2eb 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@
 | Component | Build Status | NuGet Package |
 |:-|---|---|
 | Core Library | [![Build status](https://ci.appveyor.com/api/projects/status/5b37qa4h0o2ci3db/branch/master?svg=true)](https://ci.appveyor.com/project/nfbot/lib-corelibrary/branch/master) | [![NuGet](https://img.shields.io/nuget/v/nanoFramework.CoreLibrary.svg)](https://www.nuget.org/packages/nanoFramework.CoreLibrary/)  |
-| Core Library (preview) | [![Build status](https://ci.appveyor.com/api/projects/status/5b37qa4h0o2ci3db/branch/develop?svg=true)](https://ci.appveyor.com/project/nfbot/lib-corelibrary/branch/develop) | [![MyGet Pre Release](https://img.shields.io/myget/nanoframework-dev/vpre/nanoFramework.CoreLibrary.svg)](https://www.myget.org/feed/nanoframework-dev/package/nuget/nanoFramework.CoreLibrary) |
+| Core Library (preview) | [![Build Status](https://dev.azure.com/nanoframework/CoreLibrary/_apis/build/status/nanoframework.lib-CoreLibrary)](https://dev.azure.com/nanoframework/CoreLibrary/_build/latest?definitionId=24) | [![MyGet Pre Release](https://img.shields.io/myget/nanoframework-dev/vpre/nanoFramework.CoreLibrary.svg)](https://www.myget.org/feed/nanoframework-dev/package/nuget/nanoFramework.CoreLibrary) |
 
 
 ## Feedback and documentation
diff --git a/appveyor-discord.ps1 b/appveyor-discord.ps1
deleted file mode 100644
index a1ce8b91..00000000
--- a/appveyor-discord.ps1
+++ /dev/null
@@ -1,82 +0,0 @@
-# Copyright (c) 2017 The nanoFramework project contributors
-# Portions Copyright (c) Sankarsan Kampa (a.k.a. k3rn31p4nic).  All rights reserved.
-# See LICENSE file in the project root for full license information.
-
-$STATUS=$args[0]
-$WEBHOOK_URL=$args[1]
-
-Write-Output "[Webhook]: Sending webhook to Discord..."
-
-Switch ($STATUS) {
-  "success" {
-    $EMBED_COLOR=3066993
-    $STATUS_MESSAGE="Passed"
-    Break
-  }
-  "failure" {
-    $EMBED_COLOR=15158332
-    $STATUS_MESSAGE="Failed"
-    Break
-  }
-  default {
-    Write-Output "Default!"
-    Break
-  }
-}
-
-if (!$env:APPVEYOR_REPO_COMMIT) {
-  $env:APPVEYOR_REPO_COMMIT="$(git log -1 --pretty="%H")"
-}
-
-$AUTHOR_NAME="$(git log -1 "$env:APPVEYOR_REPO_COMMIT" --pretty="%aN")"
-$COMMITTER_NAME="$(git log -1 "$env:APPVEYOR_REPO_COMMIT" --pretty="%cN")"
-$COMMIT_SUBJECT="$(git log -1 "$env:APPVEYOR_REPO_COMMIT" --pretty="%s")"
-$COMMIT_MESSAGE="$(git log -1 "$env:APPVEYOR_REPO_COMMIT" --pretty="%b")"
-
-if ($AUTHOR_NAME -eq $COMMITTER_NAME) {
-  $CREDITS = "$AUTHOR_NAME authored & committed"
-}
-else {
-  $CREDITS = "$AUTHOR_NAME authored & $COMMITTER_NAME committed"
-}
-
-if ($env:APPVEYOR_PULL_REQUEST_NUMBER) {
-  $URL="https://github.com/$env:APPVEYOR_REPO_NAME/pull/$env:APPVEYOR_PULL_REQUEST_NUMBER"
-}
-else {
-  $URL=""
-}
-
-$BUILD_VERSION = [uri]::EscapeDataString($env:APPVEYOR_BUILD_VERSION)
-
-$WEBHOOK_DATA="{
-  ""embeds"": [ {
-    ""color"": $EMBED_COLOR,
-    ""author"": {
-      ""name"": ""Job #$env:APPVEYOR_JOB_NUMBER (Build #$env:APPVEYOR_BUILD_NUMBER) $STATUS_MESSAGE - $env:APPVEYOR_REPO_NAME"",
-      ""url"": ""https://ci.appveyor.com/project/$env:APPVEYOR_ACCOUNT_NAME/$env:APPVEYOR_PROJECT_SLUG/build/$BUILD_VERSION"",
-      ""icon_url"": ""$AVATAR""
-    },
-    ""title"": ""$COMMIT_SUBJECT"",
-    ""url"": ""$URL"",
-    ""description"": ""$COMMIT_MESSAGE $CREDITS"",
-    ""fields"": [
-      {
-        ""name"": ""Commit"",
-        ""value"": ""[``$($env:APPVEYOR_REPO_COMMIT.substring(0, 7))``](https://github.com/$env:APPVEYOR_REPO_NAME/commit/$env:APPVEYOR_REPO_COMMIT)"",
-        ""inline"": true
-      },
-      {
-        ""name"": ""Branch/Tag"",
-        ""value"": ""[``$env:APPVEYOR_REPO_BRANCH``](https://github.com/$env:APPVEYOR_REPO_NAME/tree/$env:APPVEYOR_REPO_BRANCH)"",
-        ""inline"": true
-      }
-    ]
-  } ],
-  ""content"" : """",
-  ""file"": """"
-}"
-
-Invoke-RestMethod -Uri $WEBHOOK_URL -Method POST -UserAgent AppVeyor-Webhook -ContentType 'application/json' -Body $WEBHOOK_DATA
-
-Write-Output "[Webhook]: Successfully sent the webhook."
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index e46a2f11..00000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,170 +0,0 @@
-# configuration for all branches
-
-image: Visual Studio 2017
-
-skip_tags: false
-
-skip_branch_with_pr: true
-
-test: off
-
-# Skipping commits affecting specific files
-skip_commits:
-  files:
-  - '**\AssemblyInfo*.*'
-  - '**/*.md'
-  - 'LICENSE'
-  - dir/*
-  - '.gitignore'
-  - 'azure-pipelines.yml'
-
-build:
-  verbosity: minimal
-
-environment:
-  APPVEYOR_IGNORE_COMMIT_FILTERING_ON_TAG: true
-  APPVEYOR_SAVE_CACHE_ON_ERROR: true
-  matrix:
-    - RUBY_VERSION: 24
-  GitHubUserName:
-    secure: 7OBtVAMTodMWK20wg6pGnQ==
-  GitHubUserEmail:
-    secure: /NpmL1KqwHyHFnF0GlUovA586wDIt8Hg/Q8Dro6kUpk=
-  GitHubToken:
-    secure: i/2hGsqVMwzdM5yIS4rxOIeG3ftx7su7klWYN80s/fHvgk7A5H2fF3oUTNLcyTbw
-  GitRestAuth:
-    secure: E3bCMe4LtDdAhHSYRcLp0N6DixJe1m8TNxhYeJW/GnqM3WXdRqsgkHSbwootPjJQtOQJrps4twmzTVzofLSVgPgbzU8PxU0AkJV7zwkyVOE=
-
-init:
-- git config --global core.autocrlf true
-- git config --global credential.helper store
-- ps: Add-Content "$env:USERPROFILE\.git-credentials" "https://$($env:GitHubToken):x-oauth-basic@github.com`n"
-- git config --global user.email "%GitHubUserEmail%"
-- git config --global user.name "%GitHubUserName%"
-
-install:
-- set PATH=C:\Ruby%RUBY_VERSION%\bin;%PATH%
-- bundle config --local path vendor/bundle
-- gem install bundler --quiet --no-ri --no-rdoc
-- gem install github_changelog_generator --quiet --no-ri --no-rdoc
-- dotnet tool install --tool-path . nbgv
-- ps: |
-    .\install-vsix-appveyor.ps1
-    
-    if ($LastExitCode -ne 0) { $host.SetShouldExit($LastExitCode)  }
-
-before_build:
-- ps: >-
-
-    nuget restore source\nanoFramework.CoreLibrary.sln
-
-    .\nbgv cloud -p source -a -c
-
-build_script:
-- ps: msbuild source\nanoFramework.CoreLibrary.sln /p:PublicRelease=true /p:Configuration=Release /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
-
-before_deploy:
-  - ps:  >-
-      .\nbgv cloud --version=$env:NBGV_SemVer1
-
-      $env:MyNuGetVersion = $env:NBGV_NuGetPackageVersion -replace "\-g$env:NBGV_GitCommitIdShort", ""
-    
-      .\generate-change-log.ps1
-
-  - nuget pack source\nanoFramework.CoreLibrary.nuspec -Version %MyNuGetVersion%
-  - nuget pack source\nanoFramework.CoreLibrary.DELIVERABLES.nuspec -Version %MyNuGetVersion%
-  - ps:  >-
-      .\commit-assemblyinfo-changes.ps1
-      
-      .\generate-change-log.ps1
-
-      Push-AppveyorArtifact $env:APPVEYOR_BUILD_FOLDER\nanoFramework.CoreLibrary.$env:MyNuGetVersion.nupkg
-
-after_deploy:
-# for this environment variable to work here it has to be set in AppVeyor UI
-- nuget push nanoFramework.CoreLibrary.%MyNuGetVersion%.nupkg %MyGetToken% -Source https://www.myget.org/F/nanoframework-dev/api/v2/package
-- nuget push nanoFramework.CoreLibrary.DELIVERABLES.%MyNuGetVersion%.nupkg %MyGetToken% -Source https://www.myget.org/F/nanoframework-dev/api/v2/package
-
-# requires APPVEYOR_DISCORD_WEBHOOK_URL enviroment variable set with Discord webhook URL
-on_failure:
-  - ps: |
-  
-      & $env:APPVEYOR_BUILD_FOLDER\appveyor-discord.ps1 failure $env:APPVEYOR_DISCORD_WEBHOOK_URL
-
-on_success:
-  - ps: .\update-dependencies.ps1
-
-cache:
-  - source\packages -> **source\packages.config
-
-################################################
-# override configuration for specific branches
-for:
-
--
-  branches:
-    only:
-      - master
-      - /v\d.*/
-
-  deploy:
-  - provider: NuGet
-    api_key: $(NuGetToken)
-    skip_symbols: true
-    on:
-      appveyor_repo_tag: true
-  - provider: GitHub
-    tag: v$(MyNuGetVersion)
-    release: nanoFramework Base Class Library v$(MyNuGetVersion)
-    description: 'Check the [changelog](https://github.com/nanoframework/lib-CoreLibrary/blob/master/CHANGELOG.md)\n\n## Install from NuGet\n\nThe following NuGet packages are available for download from this release\n\n:package: [.NET](https://www.nuget.org/packages/nanoFramework.CoreLibrary/$(MyNuGetVersion)) v$(MyNuGetVersion)'
-    auth_token:
-      secure: DNixoFFE+pGlwyhj7McfZoln42vOmj0iY1iNV9zXEr3y0NpXlOIgL8k5ehzlFM1S
-    artifact:
-    draft: true
-    prerelease: false
-    force_update: true
-    on:
-      appveyor_repo_tag: false
-
--
-  branches:
-    only:
-      - /dev(elop)?$/
-
-  deploy:
-  - provider: GitHub
-    tag: v$(MyNuGetVersion)
-    release: nanoFramework Core Library v$(MyNuGetVersion)
-    description: 'Check the [changelog](https://github.com/nanoframework/lib-CoreLibrary/blob/develop/CHANGELOG.md)\n\n## Install from nanoFramework MyGet development feed\n\nThe following NuGet packages are available for download from this release\n\n:package: [.NET](https://www.myget.org/feed/nanoframework-dev/package/nuget/nanoFramework.CoreLibrary/$(MyNuGetVersion)) v$(MyNuGetVersion)'
-    auth_token:
-      secure: DNixoFFE+pGlwyhj7McfZoln42vOmj0iY1iNV9zXEr3y0NpXlOIgL8k5ehzlFM1S
-    artifact: source\Nuget.CoreLibrary\bin\Release\nanoFramework.CoreLibrary.$(MyNuGetVersion).nupkg
-    draft: true
-    prerelease: true
-    force_update: true
-    on:
-      appveyor_repo_tag: false    
-
--
-  branches:
-    only:
-      - /release.*/
-
-  deploy:
-  - provider: NuGet
-    api_key: $(NuGetToken)
-    skip_symbols: true
-    on:
-      appveyor_repo_tag: true
-  - provider: GitHub
-    tag: v$(MyNuGetVersion)
-    release: nanoFramework Core Library v$(MyNuGetVersion)
-    description: 'Check the [changelog](https://github.com/nanoframework/lib-CoreLibrary/blob/$(appveyor_repo_branch)/CHANGELOG.md)\n\n## Install from NuGet\n\nThe following NuGet packages are available for download from this release\n\n:package: [.NET](https://www.nuget.org/packages/nanoFramework.CoreLibrary/$(MyNuGetVersion)) v$(MyNuGetVersion)'
-    auth_token:
-      secure: DNixoFFE+pGlwyhj7McfZoln42vOmj0iY1iNV9zXEr3y0NpXlOIgL8k5ehzlFM1S
-    artifact:
-    draft: true
-    prerelease: true
-    force_update: true
-    on:
-      appveyor_repo_tag: false
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
new file mode 100644
index 00000000..18759c68
--- /dev/null
+++ b/azure-pipelines.yml
@@ -0,0 +1,80 @@
+trigger:
+  branches:
+    include:
+    - master
+    - develop
+    - release/*
+    - refs/tags/*
+  paths:
+    exclude:
+    - /*.md
+    - .gitignore
+    - appveyor.yml
+  # waiting for feature to become available
+  # tags:
+  #   include:
+  #   - v/*
+
+pr:
+  branches:
+    include:
+    - master
+    - develop
+    - release/*
+  autoCancel: true
+
+# add nf-tools repo to resources (for Azure Pipelines templates)
+resources:
+  repositories:
+    - repository: templates
+      type: github
+      name: nanoframework/nf-tools
+      endpoint: nfbot
+
+pool:
+  vmImage: 'VS2017-Win2016'
+
+variables:
+  solution: '**/source/*.sln'
+  buildPlatform: 'Any CPU'
+  buildConfiguration: 'Release'
+  nugetPackageName: 'nanoFramework.CoreLibrary'
+  repoName: 'lib-CoreLibrary'
+
+steps:
+
+# step from template @ nf-tools repo
+# all build, update and publish steps
+- template: azure-pipelines-templates/class-lib-build.yml@templates  
+  parameters:
+    sourceFileName: 'corlib_native.cpp'
+    classLibName: 'CoreLibrary'
+    skipNuGetRestore: true
+
+# update dependencies
+- task: UpdatenFDependencies@1
+  inputs:
+    gitHubToken: $(GitHubToken)
+    repositoriesToUpdate: |
+      lib-nanoFramework.Devices.OneWire
+      lib-nanoFramework.Runtime.Events 
+      lib-nanoFramework.Runtime.Native
+      lib-Windows.Storage.Streams
+      lib-Windows.Devices.Adc
+      lib-Windows.Devices.I2c
+      lib-Windows.Devices.Pwm
+      lib-Windows.Devices.Spi
+      lib-nanoFramework.Devices.OneWire
+      lib-nanoFramework.Networking.Sntp
+      lib-nanoFramework.Hardware.Stm32
+      lib-nanoFramework.System.Math
+  condition: and( succeeded(), startsWith(variables['Build.SourceBranch'], 'refs/tags/v') )
+  displayName: Update dependent class libs
+
+# step from template @ nf-tools repo
+# report error
+- template: azure-pipelines-templates/discord-webhook-task.yml@templates  
+  parameters:
+    status: 'failure'
+    webhookUrl: '$(DiscordWebhook)'
+    message: ''
diff --git a/commit-assemblyinfo-changes.ps1 b/commit-assemblyinfo-changes.ps1
deleted file mode 100644
index 52867824..00000000
--- a/commit-assemblyinfo-changes.ps1
+++ /dev/null
@@ -1,91 +0,0 @@
-# Copyright (c) 2018 The nanoFramework project contributors
-# See LICENSE file in the project root for full license information.
-
-# update assembly info in nf-interpreter if this is tag
-if ($env:APPVEYOR_REPO_TAG -eq "true")
-{
-    'Updating assembly version in nf-interpreter...' | Write-Host -ForegroundColor White -NoNewline
-
-    # name of source file with the native declaration
-    $nativeFile = "corlib_native.cpp"
-
-    #  find assembly declaration
-    $assemblyDeclarationPath = (Get-ChildItem -Path ".\*" -Include $nativeFile -Recurse)
-    $filecontent = Get-Content($assemblyDeclarationPath)
-    $assemblyChecksum  = $filecontent -match '(0x.{8})'
-    $assemblyChecksum  = $assemblyChecksum -replace "," , ""
-    $assemblyChecksum  = $assemblyChecksum -replace "    " , ""
-
-    # clone nf-interpreter repo (only a shallow clone with last commit)
-    git clone https://github.com/nanoframework/nf-interpreter -b develop --depth 1 -q
-    cd nf-interpreter > $null
-
-    # new branch name
-    $newBranch = "$env:APPVEYOR_REPO_BRANCH-nfbot/update-version/nanoFramework.CorLib/$env:MyNuGetVersion"
-
-    # create branch to perform updates
-    git checkout -b "$newBranch" develop -q
-    
-    # replace version in assembly declaration
-    $newVersion = $env:NBGV_AssemblyFileVersion -replace "\." , ", "
-    $newVersion = "{ $newVersion }"
-    
-    $versionRegex = "\{\s*\d+\,\s*\d+\,\s*\d+\,\s*\d+\s*}"
-    $assemblyFiles = (Get-ChildItem ".\src\CLR\CorLib\corlib_native.cpp" -Recurse)
-
-    foreach($file in $assemblyFiles)
-    {
-        # replace checksum
-        $filecontent = Get-Content($file)
-        attrib $file -r
-        $filecontent -replace  "0x.{8}", $assemblyChecksum | Out-File $file -Encoding utf8
-
-        # replace version
-        $filecontent = Get-Content($file)
-        attrib $file -r
-        $filecontent -replace $versionRegex, $newVersion | Out-File $file -Encoding utf8
-    }
-
-    # check if anything was changed
-    $repoStatus = "$(git status --short --porcelain)"
-
-    if ($repoStatus -eq "") 
-    {
-        # nothing changed
-        &  cd .. > $null
-    }
-    else
-    {
-        $commitMessage = "Update nanoFramework.CorLib version to $env:MyNuGetVersion"
-
-        # commit changes
-        git add -A 2>&1
-        git commit -m"$commitMessage" -q
-        git push --set-upstream origin "$newBranch" --porcelain -q > $null
-    
-        # start PR
-        $prRequestBody = @{title="$commitMessage";body="$commitMessage`n`nStarted from https://github.com/$env:APPVEYOR_REPO_NAME/commit/$env:APPVEYOR_REPO_COMMIT`n`n[version update]";head="$newBranch";base="develop"} | ConvertTo-Json
-        $githubApiEndpoint = "https://api.github.com/repos/nanoframework/nf-interpreter/pulls"
-        [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
-
-        try 
-        {
-            $result = Invoke-RestMethod -Method Post -UserAgent [Microsoft.PowerShell.Commands.PSUserAgent]::InternetExplorer -Uri  $githubApiEndpoint -Header @{"Authorization"="Basic $env:GitRestAuth"} -ContentType "application/json" -Body $prRequestBody
-            'Started PR with version update...' | Write-Host -ForegroundColor White -NoNewline
-            'OK' | Write-Host -ForegroundColor Green
-        }
-        catch 
-        {
-            $result = $_.Exception.Response.GetResponseStream()
-            $reader = New-Object System.IO.StreamReader($result)
-            $reader.BaseStream.Position = 0
-            $reader.DiscardBufferedData()
-            $responseBody = $reader.ReadToEnd();
-
-            "Error starting PR: $responseBody" | Write-Host -ForegroundColor Red
-        }
-
-        # move back to home folder
-        &  cd .. > $null
-    }
-}
diff --git a/generate-change-log.ps1 b/generate-change-log.ps1
deleted file mode 100644
index 17c2bc9a..00000000
--- a/generate-change-log.ps1
+++ /dev/null
@@ -1,36 +0,0 @@
-# Copyright (c) 2018 The nanoFramework project contributors
-# See LICENSE file in the project root for full license information.
-
-# skip generating the change log when build is a pull-request or not a tag (can't commit when repo is in a tag)
-if ($env:appveyor_pull_request_number -or $env:APPVEYOR_REPO_TAG -eq "true")
-{
-    'Skip change log processing...' | Write-Host -ForegroundColor White
-}
-else
-{
-    # need this to keep ruby happy
-    md c:\tmp  > $null
-
-    if ($env:APPVEYOR_REPO_BRANCH -eq "master" -or $env:APPVEYOR_REPO_BRANCH -match "^release*")
-    {
-        # generate change log including future version
-        bundle exec github_changelog_generator --token $env:GitHubToken --future-release "v$env:NBGV_Version"
-    }
-    else 
-    {
-        # generate change log
-        # version includes commits
-        bundle exec github_changelog_generator --token $env:GitHubToken        
-    }
-
-    # updated changelog, if there are any differences
-    $logDif = git diff CHANGELOG.md
-
-    if($logDif -ne $null)
-    {
-        git add CHANGELOG.md
-        git commit -m "Update CHANGELOG for v$env:MyNuGetVersion"
-        # need to wrap the git command bellow so it doesn't throw an error because of redirecting the output to stderr
-        git push origin "HEAD:$env:APPVEYOR_REPO_BRANCH" --porcelain  | Write-Host
-    }
-}
diff --git a/install-vsix-appveyor.ps1 b/install-vsix-appveyor.ps1
deleted file mode 100644
index b4f6f3e3..00000000
--- a/install-vsix-appveyor.ps1
+++ /dev/null
@@ -1,25 +0,0 @@
-# Copyright (c) 2018 The nanoFramework project contributors
-# See LICENSE file in the project root for full license information.
-
-$vsixPath = ""
-
-# try downloading from VS marketplace
-try
-{
-    $vsixPath = "$($env:USERPROFILE)\nanoFramework.Tools.VS2017.Extension.vsix"
-    (New-Object Net.WebClient).DownloadFile('https://marketplace.visualstudio.com/_apis/public/gallery/publishers/vs-publisher-1470366/vsextensions/nanoFrameworkVS2017Extension/0/vspackage', $vsixPath)        
-}
-catch
-{
-    # download failed, try fron MyGet feed
-    $vsixPath = "$($env:USERPROFILE)\47973986-ed3c-4b64-ba40-a9da73b44ef7-1.0.1.0.vsix"
-    (New-Object Net.WebClient).DownloadFile('https://www.myget.org/F/nanoframework-dev/vsix/47973986-ed3c-4b64-ba40-a9da73b44ef7-1.0.1.0.vsix', $vsixPath)
-}
-
-"`"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VSIXInstaller.exe`" /q /a $vsixPath" | out-file ".\install-vsix.cmd" -Encoding ASCII
-
-'Installing nanoFramework VS extension ...' | Write-Host -ForegroundColor White -NoNewline
-
-& .\install-vsix.cmd > $null
-
-'OK' | Write-Host -ForegroundColor Green
diff --git a/source/version.json b/source/version.json
index e07545a7..a2029e38 100644
--- a/source/version.json
+++ b/source/version.json
@@ -14,13 +14,6 @@
   ],
   "cloudBuild": {
     "setVersionVariables": true,
-    "setAllVariables": true,
-    "buildNumber": {
-      "enabled": true,
-      "includeCommitId": {
-        "when": "nonPublicReleaseOnly",
-        "where": "buildMetadata"
-      }
-    }
+    "setAllVariables": true
   }
 }
\ No newline at end of file
diff --git a/update-dependencies.ps1 b/update-dependencies.ps1
deleted file mode 100644
index f9aac58c..00000000
--- a/update-dependencies.ps1
+++ /dev/null
@@ -1,262 +0,0 @@
-# Copyright (c) 2018 The nanoFramework project contributors
-# See LICENSE file in the project root for full license information.
-
-# only need to update dependencies when build is a tag
-if ($env:appveyor_pull_request_number -or $env:APPVEYOR_REPO_TAG -eq "false")
-{
-    'Skip updating dependencies...' | Write-Host -ForegroundColor White
-}
-else
-{
-    # update dependencies for class libraries that depend ONLY on mscorlib
-
-    # because it can take sometime for the package to become available on the NuGet providers
-    # need to hang here for 5 minutes (5 * 60)
-    "Waiting 5 minutes to let package process flow in NuGet providers..." | Write-Host -ForegroundColor White
-
-    For ($i=300; $i -gt 0; $i--) 
-    {  
-        Write-Host "`r$i seconds remaining   " -NoNewLine
-        Start-Sleep -Seconds 1 
-    }
-    Write-Host     "`r                       "
-
-    $librariesToUpdate =    ("lib-nanoFramework.Devices.OneWire",
-                            "lib-nanoFramework.Runtime.Events", 
-                            "lib-nanoFramework.Runtime.Native",
-                            "lib-Windows.Storage.Streams",
-                            "lib-Windows.Devices.Adc",
-                            "lib-Windows.Devices.I2c",
-                            "lib-Windows.Devices.Pwm",
-                            "lib-Windows.Devices.Spi",
-                            "lib-nanoFramework.Devices.OneWire",
-                            "lib-nanoFramework.Networking.Sntp",
-                            "lib-nanoFramework.Hardware.Stm32",
-                            "lib-nanoFramework.System.Math")
-
-    ForEach($library in $librariesToUpdate)
-    {
-        # init/reset these
-        $commitMessage = ""
-        $prTitle = ""
-        $projectPath = ""
-        $newBranchName = "$env:APPVEYOR_REPO_BRANCH-nfbot/update-dependencies"
-    
-        "Updating $library" | Write-Host -ForegroundColor White
-    
-        # make sure we are in the projects directory
-        &  cd "C:\projects" > $null
-
-        # clone library repo and checkout develop branch
-        "Cloning $library" | Write-Host -ForegroundColor White
-        git clone "https://github.com/nanoframework/$library" -b develop --depth 1 -q
-        cd $library
-        cd source
-    
-        # find solution file in repository
-        $solutionFile = (Get-ChildItem -Path ".\" -Include "*.sln" -Recurse)
-
-        # find packages.config
-        $packagesConfig = (Get-ChildItem -Path ".\" -Include "packages.config" -Recurse)
-
-        # load packages.config as XML doc
-        [xml]$packagesDoc = Get-Content $packagesConfig
-
-        $nodes = $packagesDoc.SelectNodes("*").SelectNodes("*")
-
-        $packageList = @(,@())
-
-        foreach ($node in $nodes)
-        {
-            # filter out Nerdbank.GitVersioning package
-            if($node.id -notlike "Nerdbank.GitVersioning*")
-            {
-                if($packageList)
-                {
-                    $packageList += , ($node.id,  $node.version)
-                }
-                else
-                {
-                    $packageList = , ($node.id,  $node.version)
-                }
-            }
-        }
-
-        if ($packageList.length -gt 0)
-        {
-            "NuGet packages to update:" | Write-Host -ForegroundColor White
-            $packageList | Write-Host -ForegroundColor White
-
-            # restore NuGet packages, need to do this before anything else
-            nuget restore $solutionFile[0] -Source https://www.myget.org/F/nanoframework-dev/api/v3/index.json -Source https://api.nuget.org/v3/index.json                
-
-            # rename nfproj files to csproj
-            Get-ChildItem -Path ".\" -Include "*.nfproj" -Recurse |
-                Foreach-object {
-                    $OldName = $_.name; 
-                    $NewName = $_.name -replace 'nfproj','csproj'; 
-                    Rename-Item  -Path $_.fullname -Newname $NewName; 
-                }
-
-            # update all packages
-            foreach ($package in $packageList)
-            {
-                # get package name and target version
-                $packageName = $package[0]
-                $packageOriginVersion = $package[1]
-    
-                # update package
-                if ($env:APPVEYOR_REPO_BRANCH -like '*release*' -or $env:APPVEYOR_REPO_BRANCH -like '*master*')
-                {
-                    # don't allow prerelease for release and master branches
-                    $updatePackage = nuget update $solutionFile[0].FullName -Source https://api.nuget.org/v3/index.json -Source https://api.nuget.org/v3/index.json 
-                }
-                else
-                {
-                    # allow prerelease for all others
-                    $updatePackage = nuget update $solutionFile[0].FullName -Source https://www.myget.org/F/nanoframework-dev/api/v3/index.json -Source https://api.nuget.org/v3/index.json -PreRelease
-                }
-
-                # need to get target version
-                # load packages.config as XML doc
-                [xml]$packagesDoc = Get-Content $packagesConfig
-
-                $nodes = $packagesDoc.SelectNodes("*").SelectNodes("*")
-
-                foreach ($node in $nodes)
-                {
-                    # find this package
-                    if($node.id -match $packageName)
-                    {
-                        $packageTargetVersion = $node.version
-                    }
-                }
-
-                #  find csproj
-                $projectPath = (Get-ChildItem -Path ".\" -Include "*.csproj" -Recurse)
-
-                # replace NFMDP_PE_LoadHints
-                $filecontent = Get-Content($projectPath)
-                attrib $projectPath -r
-                $filecontent -replace "($packageName.$packageOriginVersion)", "$packageName.$packageTargetVersion" | Out-File $projectPath -Encoding utf8
-
-                # update nuspec files, if any
-                $nuspecFiles = (Get-ChildItem -Path ".\" -Include "*.nuspec" -Recurse)
-
-                foreach ($nuspec in $nuspecFiles)
-                {
-                    [xml]$nuspecDoc = Get-Content $nuspec
-
-                    $nodes = $nuspecDoc.SelectNodes("*").SelectNodes("*")
-
-                    foreach ($node in $nodes)
-                    {
-                        if($node.Name -eq "metadata")
-                        {
-                            foreach ($metadataItem in $node.ChildNodes)
-                            {                          
-                                if($metadataItem.Name -eq "dependencies")
-                                {
-                                    foreach ($dependency in $metadataItem.ChildNodes)
-                                    {
-                                        if($dependency.Attributes["id"].value -eq $packageName)
-                                        {
-                                            $dependency.Attributes["version"].value = "[$packageTargetVersion]"
-                                        }
-                                    }
-                                }
-                            }
-                        }
-                    }
-
-                    $nuspecDoc.Save($nuspec[0].FullName)
-                }
-
-                #  update branch name
-                $tempPackageName = $packageName -replace "(nanoFramework.)", ""
-                $newBranchName += "/$tempPackageName.$packageTargetVersion"
-                
-                # build commit message
-                $commitMessage += "Bumps $packageName from $packageOriginVersion to $packageTargetVersion.`n"
-
-                # build PR title
-                $prTitle = "Bumps $packageName from $packageOriginVersion to $packageTargetVersion"
-            }
-
-            # rename csproj files back to nfproj
-            Get-ChildItem -Path ".\" -Include "*.csproj" -Recurse |
-            Foreach-object {
-                $OldName = $_.name; 
-                $NewName = $_.name -replace 'csproj','nfproj'; 
-                Rename-Item  -Path $_.fullname -Newname $NewName; 
-                }
-            
-            # need this line so nfbot flags the PR appropriately
-            $commitMessage += "`n[version update]`n`n"
-
-            # better add this warning line               
-            $commitMessage += "### :warning: This is an automated update. Merge only after all tests pass. :warning:`n"
-
-            # create branch to perform updates
-            git branch $newBranchName -q
-            
-            # checkout branch
-            git checkout $newBranchName -q
-
-            # commit changes
-            git add -A 2>&1
-
-            # commit message with a different title if one or more dependencies are updated
-            if ($packageList.length -gt 1)
-            {
-                git commit -m "Update $packageList.length NuGet dependencies" -m"$commitMessage" -q
-
-                # fix PR title
-                $prTitle = "Update $packageList.length NuGet dependencies"
-            }
-            else 
-            {
-                git commit -m "$prTitle" -m "$commitMessage" -q
-            }
-
-            git push --set-upstream origin $newBranchName --porcelain -q
-
-            # start PR
-            # we are hardcoding to develop branch to have a fixed one
-            # this is very important for tags (which don't have branch information)
-            # considering that the base branch can be changed at the PR ther is no big deal about this 
-            $prRequestBody = @{title="$prTitle";body="$commitMessage";head="$newBranchName";base="develop"} | ConvertTo-Json
-            $githubApiEndpoint = "https://api.github.com/repos/nanoframework/$library/pulls"
-            [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
-
-            $headers = @{}
-            $headers.Add("Authorization","Basic $env:GitRestAuth")
-            $headers.Add("Accept","application/vnd.github.symmetra-preview+json")
-
-            try 
-            {
-                $result = Invoke-RestMethod -Method Post -UserAgent [Microsoft.PowerShell.Commands.PSUserAgent]::InternetExplorer -Uri  $githubApiEndpoint -Header $headers -ContentType "application/json" -Body $prRequestBody
-                'Started PR with dependencies update...' | Write-Host -ForegroundColor White -NoNewline
-                'OK' | Write-Host -ForegroundColor Green
-            }
-            catch 
-            {
-                $result = $_.Exception.Response.GetResponseStream()
-                $reader = New-Object System.IO.StreamReader($result)
-                $reader.BaseStream.Position = 0
-                $reader.DiscardBufferedData()
-                $responseBody = $reader.ReadToEnd();
-
-                "Error starting PR: $responseBody" | Write-Host -ForegroundColor Red
-            }
-        }
-        else
-        {
-            # nothing to update???
-            "Couldn't find anything to update..." | Write-Host -ForegroundColor Black -BackgroundColor Yellow
-        }
-    }
-
-    # get back to the original build folder
-    cd $env:APPVEYOR_BUILD_FOLDER
-}