diff --git a/.ci/appveyor.psm1 b/.ci/appveyor.psm1
deleted file mode 100644
index 2d4f816..0000000
--- a/.ci/appveyor.psm1
+++ /dev/null
@@ -1,289 +0,0 @@
-
-# @author Serghei Iakovlev <https://github.com/sergeyklay>
-
-Function InitializeReleaseVars {
-	If ($Env:PLATFORM -eq 'x86') {
-		If ($Env:PHP_BUILD_TYPE -Match "nts-Win32") {
-			$Env:RELEASE_FOLDER = "${Env:APPVEYOR_BUILD_FOLDER}\Release"
-		} Else {
-			$Env:RELEASE_FOLDER = "${Env:APPVEYOR_BUILD_FOLDER}\Release_TS"
-		}
-	} Else {
-		If ($Env:PHP_BUILD_TYPE -Match "nts-Win32") {
-			$Env:RELEASE_FOLDER = "${Env:APPVEYOR_BUILD_FOLDER}\${Env:PLATFORM}\Release"
-		} Else {
-			$Env:RELEASE_FOLDER = "${Env:APPVEYOR_BUILD_FOLDER}\${Env:PLATFORM}\Release_TS"
-		}
-	}
-
-	$Env:RELEASE_ZIPBALL = "mustache_${Env:PLATFORM}_${Env:VC_VER}_${Env:PHP_VER}_${Env:APPVEYOR_BUILD_VERSION}"
-}
-
-Function InstallPhpDevPack {
-	Write-Host "Install PHP Dev pack: ${Env:PHP_FULL_VER}" -foregroundcolor Cyan
-
-	$RemoteUrl = "http://windows.php.net/downloads/releases/php-devel-pack-${Env:PHP_FULL_VER}-${Env:PHP_BUILD_TYPE}-${Env:VC_VER}-${Env:PLATFORM}.zip"
-	$DestinationPath = "C:\Downloads\php-devel-pack-${Env:PHP_FULL_VER}-${Env:PHP_BUILD_TYPE}-${Env:VC_VER}-${Env:PLATFORM}.zip"
-	$InstallPath = 'C:\Projects\php-devpack'
-
-	If (-not (Test-Path $InstallPath)) {
-		If (-not [System.IO.File]::Exists($DestinationPath)) {
-			Write-Host "Downloading PHP Dev pack: ${RemoteUrl} ..."
-			DownloadFile $RemoteUrl $DestinationPath
-		}
-
-		$DestinationUnzipPath = "${Env:Temp}\php-${Env:PHP_FULL_VER}-devel-${Env:VC_VER}-${Env:PLATFORM}"
-
-		If (-not (Test-Path "$DestinationUnzipPath")) {
-			Expand-Item7zip $DestinationPath $Env:Temp
-		}
-
-		Move-Item -Path $DestinationUnzipPath -Destination $InstallPath
-	}
-}
-
-Function InstallPhp {
-	Write-Host "Install PHP: ${Env:PHP_FULL_VER}" -foregroundcolor Cyan
-
-	$RemoteUrl = "http://windows.php.net/downloads/releases/php-${Env:PHP_FULL_VER}-${Env:PHP_BUILD_TYPE}-${Env:VC_VER}-${Env:PLATFORM}.zip"
-	$DestinationPath = "C:\Downloads\php-${Env:PHP_FULL_VER}-${Env:PHP_BUILD_TYPE}-${Env:VC_VER}-${Env:PLATFORM}.zip"
-	$InstallPath = 'C:\Projects\php'
-
-	If (-not (Test-Path $InstallPath)) {
-		If (-not [System.IO.File]::Exists($DestinationPath)) {
-			Write-Host "Downloading PHP source code: ${RemoteUrl} ..."
-			DownloadFile $RemoteUrl $DestinationPath
-		}
-
-		Expand-Item7zip $DestinationPath $InstallPath
-	}
-
-	If (-not (Test-Path "${InstallPath}\php.ini")) {
-		Copy-Item "${InstallPath}\php.ini-development" "${InstallPath}\php.ini"
-	}
-}
-
-Function InstallSdk {
-	Write-Host "Install PHP SDK binary tools: ${Env:PHP_SDK_BINARY_TOOLS_VER}" -foregroundcolor Cyan
-
-	$RemoteUrl = "https://github.com/Microsoft/php-sdk-binary-tools/archive/php-sdk-${Env:PHP_SDK_BINARY_TOOLS_VER}.zip"
-	$DestinationPath = "C:\Downloads\php-sdk-${Env:PHP_SDK_BINARY_TOOLS_VER}.zip"
-	$InstallPath = 'C:\Projects\php-sdk'
-
-	If (-not (Test-Path $InstallPath)) {
-		If (-not [System.IO.File]::Exists($DestinationPath)) {
-			Write-Host "Downloading PHP SDK binary tools: ${RemoteUrl} ..."
-			DownloadFile $RemoteUrl $DestinationPath
-		}
-
-		$DestinationUnzipPath = "${Env:Temp}\php-sdk-binary-tools-php-sdk-${Env:PHP_SDK_BINARY_TOOLS_VER}"
-
-		If (-not (Test-Path "$DestinationUnzipPath")) {
-			Expand-Item7zip $DestinationPath $Env:Temp
-		}
-
-		Move-Item -Path $DestinationUnzipPath -Destination $InstallPath
-	}
-}
-
-Function Ensure7ZipIsInstalled {
-	If (-not (Get-Command "7z" -ErrorAction SilentlyContinue)) {
-		$7zipInstallationDirectory = "${Env:ProgramFiles}\7-Zip"
-
-		If (-not (Test-Path "$7zipInstallationDirectory")) {
-			Throw "The 7-zip file archiver is needed to use this module"
-		}
-
-		$Env:Path += ";$7zipInstallationDirectory"
-	}
-}
-
-Function EnsureRequiredDirectoriesPresent {
-	If (-not (Test-Path 'C:\Downloads')) {
-		New-Item -ItemType Directory -Force -Path 'C:\Downloads' | Out-Null
-	}
-
-	If (-not (Test-Path 'C:\Projects')) {
-		New-Item -ItemType Directory -Force -Path 'C:\Projects' | Out-Null
-	}
-}
-
-Function InitializeBuildVars {
-	switch ($Env:VC_VER) {
-		'vc14' {
-			If (-not (Test-Path $Env:VS120COMNTOOLS)) {
-				Throw'The VS120COMNTOOLS environment variable is not set. Check your VS installation'
-			}
-
-			$Env:VSCOMNTOOLS = $Env:VS120COMNTOOLS -replace '\\$', ''
-			Break
-		}
-		'vc15' {
-			If (-not (Test-Path $Env:VS140COMNTOOLS)) {
-				Throw'The VS140COMNTOOLS environment variable is not set. Check your VS installation'
-			}
-
-			$Env:VSCOMNTOOLS = $Env:VS140COMNTOOLS -replace '\\$', ''
-			Break
-		}
-		default {
-			Throw 'This script is designed to run with VS 14/15. Check your VS installation'
-		}
-	}
-
-	If ($Env:PLATFORM -eq 'x64') {
-		$Env:ARCH = 'x86_amd64'
-	} Else {
-		$Env:ARCH = 'x86'
-	}
-}
-
-Function AppendSessionPath {
-	[string[]] $PathsCollection = @(
-		"C:\Projects\php-sdk\bin",
-		"C:\Projects\php\bin",
-		"C:\Projects\php",
-		"C:\Projects\php-devpack",
-		"C:\Projects\output\bin",
-		"C:\Projects\output\lib",
-		"C:\Projects\output"
-	)
-
-	$CurrentPath = (Get-Item -Path ".\" -Verbose).FullName
-
-	ForEach ($PathItem In $PathsCollection) {
-		Set-Location Env:
-		$AllPaths = (Get-ChildItem Path).value.split(";") | Sort-Object -Unique
-
-		$AddToPath = $true
-
-		ForEach ($AddedPath In $AllPaths) {
-			If (-not "${AddedPath}") {
-				Continue
-			}
-
-			$AddedPath = $AddedPath -replace '\\$', ''
-
-			If ($PathItem -eq $AddedPath) {
-				$AddToPath = $false
-			}
-		}
-
-		If ($AddToPath) {
-			$Env:Path += ";${PathItem}"
-		}
-	}
-
-	Set-Location "${CurrentPath}"
-}
-
-Function SetupPhpVersionString {
-	$RemoteUrl = 'http://windows.php.net/downloads/releases/sha256sum.txt'
-	$DestinationPath = "${Env:Temp}\php-sha256sum.txt"
-
-	If (-not [System.IO.File]::Exists($DestinationPath)) {
-		Write-Host "Downloading PHP SHA Sums: ${RemoteUrl} ..."
-		DownloadFile $RemoteUrl $DestinationPath
-	}
-
-	$VersionString = Get-Content $DestinationPath | Where-Object {
-		$_ -match "php-($Env:PHP_VER\.\d+)-src"
-	} | ForEach-Object { $matches[1] }
-
-	If ($VersionString -NotMatch '\d+\.\d+\.\d+') {
-		Throw "Unable to obtain PHP version string using pattern 'php-($Env:PHP_MINOR\.\d+)-src'"
-	}
-
-	$Env:PHP_FULL_VER = $VersionString
-}
-
-Function Expand-Item7zip {
-	Param(
-		[Parameter(Mandatory=$true)][System.String] $Archive,
-		[Parameter(Mandatory=$true)][System.String] $Destination
-	)
-
-	If (-not (Test-Path -Path $Archive -PathType Leaf)) {
-		Throw "Specified archive File is invalid: [$Archive]"
-	}
-
-	If (-not (Test-Path -Path $Destination -PathType Container)) {
-		New-Item $Destination -ItemType Directory | Out-Null
-	}
-
-	$Result = (& 7z x "$Archive" "-o$Destination" -aoa -bd -y -r)
-
-	$7zipExitCode = $LASTEXITCODE
-	If ($7zipExitCode -ne 0) {
-		Throw "An error occurred while unzipping [$Archive] to [$Destination]. 7Zip Exit Code was [$7zipExitCode]"
-	}
-}
-
-Function PrintLogs {
-	If (Test-Path -Path "${Env:APPVEYOR_BUILD_FOLDER}\compile-errors.log") {
-		Get-Content -Path "${Env:APPVEYOR_BUILD_FOLDER}\compile-errors.log"
-	}
-
-	If (Test-Path -Path "${Env:APPVEYOR_BUILD_FOLDER}\compile.log") {
-		Get-Content -Path "${Env:APPVEYOR_BUILD_FOLDER}\compile.log"
-	}
-
-	If (Test-Path -Path "${Env:APPVEYOR_BUILD_FOLDER}\configure.js") {
-		Get-Content -Path "${Env:APPVEYOR_BUILD_FOLDER}\configure.js"
-	}
-}
-
-Function PrepareReleasePackage {
-	$CurrentPath = (Get-Item -Path ".\" -Verbose).FullName
-	$PackagePath = "${Env:APPVEYOR_BUILD_FOLDER}\package"
-
-	If (-not (Test-Path $PackagePath)) {
-		New-Item -ItemType Directory -Force -Path $PackagePath | Out-Null
-	}
-
-	Copy-Item -Path (Join-Path -Path $Env:APPVEYOR_BUILD_FOLDER -ChildPath '\*') -Filter '*.md' -Destination "${PackagePath}" -Force
-	Copy-Item "${Env:RELEASE_FOLDER}\php_mustache.dll" "${PackagePath}"
-
-	Set-Location "${PackagePath}"
-	$Result = (& 7z a "${Env:RELEASE_ZIPBALL}.zip" *.*)
-
-	$7zipExitCode = $LASTEXITCODE
-	If ($7zipExitCode -ne 0) {
-		Set-Location "${CurrentPath}"
-		Throw "An error occurred while creating release zippbal to [${Env:RELEASE_ZIPBALL}.zip]. 7Zip Exit Code was [${7zipExitCode}]"
-	}
-
-	Move-Item "${Env:RELEASE_ZIPBALL}.zip" -Destination "${Env:APPVEYOR_BUILD_FOLDER}"
-
-	Set-Location "${CurrentPath}"
-}
-
-Function DownloadFile {
-	param(
-		[Parameter(Mandatory=$true)][System.String] $RemoteUrl,
-		[Parameter(Mandatory=$true)][System.String] $DestinationPath
-	)
-
-	$RetryMax   = 5
-	$RetryCount = 0
-	$Completed  = $false
-
-	$WebClient = New-Object System.Net.WebClient
-	$WebClient.Headers.Add('User-Agent', 'AppVeyor PowerShell Script')
-
-	While (-not $Completed) {
-		Try {
-			$WebClient.DownloadFile($RemoteUrl, $DestinationPath)
-			$Completed = $true
-		} Catch {
-			If ($RetryCount -ge $RetryMax) {
-				$ErrorMessage = $_.Exception.Message
-				Write-Host "Error downloadingig ${RemoteUrl}: $ErrorMessage"
-				$Completed = $true
-			} Else {
-				$RetryCount++
-			}
-		}
-	}
-}
-
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index c83ee0e..0000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,167 +0,0 @@
-version: '{branch}.{build}'
-
-branches:
-  only:
-  - master
-  - appveyor
-  - w32
-  - windows
-  - ci
-
-platform:
-  - x86
-  - x64
-
-cache:
-  - 'C:\Downloads -> appveyor.yml'
-
-environment:
-  PHP_SDK_BINARY_TOOLS_VER: 2.1.9
-  NO_INTERACTION: 1
-  REPORT_EXIT_STATUS: 1
-  TEST_PHP_EXECUTABLE: C:\projects\php\php.exe
-  LIBMUSTACHE_VERSION: v0.5.0
-
-  matrix:
-# note: json-c is currently failing to compile on < vc15
-#    - PHP_VER: 7.0
-#      VC_VER: vc14
-#      PHP_BUILD_TYPE: Win32
-#      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-#    - PHP_VER: 7.0
-#      VC_VER: vc14
-#      PHP_BUILD_TYPE: nts-Win32
-#      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-#    - PHP_VER: 7.1
-#      VC_VER: vc14
-#      PHP_BUILD_TYPE: Win32
-#      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-#    - PHP_VER: 7.1
-#      VC_VER: vc14
-#      PHP_BUILD_TYPE: nts-Win32
-#      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-    - PHP_VER: 7.2
-      VC_VER: vc15
-      PHP_BUILD_TYPE: Win32
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-    - PHP_VER: 7.2
-      VC_VER: vc15
-      PHP_BUILD_TYPE: nts-Win32
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-    - PHP_VER: 7.3
-      VC_VER: vc15
-      PHP_BUILD_TYPE: Win32
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-    - PHP_VER: 7.3
-      VC_VER: vc15
-      PHP_BUILD_TYPE: nts-Win32
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-
-install:
-- cmd: cinst wget
-- ps: Import-Module .\.ci\appveyor.psm1
-- ps: InitializeBuildVars
-- '"%VSCOMNTOOLS%\VsDevCmd" %PLATFORM%'
-- '"%VSCOMNTOOLS%\..\..\VC\vcvarsall.bat" %ARCH%'
-# json-c
-- cmd: >-
-    cd C:\projects
-    
-    git clone -b windows https://github.com/jbboehr/json-c.git
-    
-    cd json-c
-    
-    mkdir build
-    
-    cd build
-    
-    cmake -G "NMake Makefiles" -DCMAKE_INSTALL_PREFIX=\projects\output -DCMAKE_BUILD_TYPE=Release ..
-    
-    nmake
-    
-    nmake install
-# libyaml
-- cmd: >-
-    cd C:\projects
-    
-    git clone https://github.com/yaml/libyaml
-    
-    cd libyaml
-    
-    mkdir build
-    
-    cd build
-    
-    cmake -G "NMake Makefiles" -DCMAKE_INSTALL_PREFIX=\projects\output -DCMAKE_BUILD_TYPE=Release ..
-    
-    nmake
-    
-    copy /Y *.lib \projects\output\lib\
-    
-    copy /Y ..\include\yaml.h \projects\output\include\
-# getopt.h
-- cmd: >-
-    cd C:\projects
-    
-    git clone https://github.com/jbboehr/Getopt-for-Visual-Studio.git
-    
-    copy /Y Getopt-for-Visual-Studio\getopt.h output\include\
-# dirent.h
-- cmd: >-
-    cd C:\projects
-    
-    git clone https://github.com/jbboehr/dirent.git
-    
-    copy /Y dirent\include\dirent.h output\include
-# libmustache
-- cmd: >-
-    cd C:\projects\
-    
-    git clone -b %LIBMUSTACHE_VERSION% https://github.com/jbboehr/libmustache.git
-    
-    cd C:\projects\libmustache
-    
-    git submodule update --init
-    
-    mkdir build
-    
-    cd build
-    
-    SET LIBYAML_PATH=\projects\output
-    
-    SET LIBJSON_PATH=\projects\output
-    
-    cmake -G "NMake Makefiles" -DCMAKE_INSTALL_PREFIX=\projects\output -DCMAKE_BUILD_TYPE=Release  ..
-    
-    nmake
-    
-    nmake install
-- ps: SetupPhpVersionString
-- ps: AppendSessionPath
-- ps: EnsureRequiredDirectoriesPresent
-- ps: Ensure7ZipIsInstalled
-- ps: InstallSdk
-- ps: InstallPhp
-- ps: InstallPhpDevPack
-
-build_script:
-- cmd: cd %APPVEYOR_BUILD_FOLDER%
-- phpsdk_setvars
-- phpize
-- ps: InitializeReleaseVars
-- cmd: configure.bat --disable-all --enable-mustache --with-libmustache=C:\projects\output --with-prefix=C:\projects\php
-- cmd: nmake 2> compile-errors.log 1> compile.log
-
-test_script:
-- cmd: nmake test
-
-after_build:
-- ps: PrepareReleasePackage
-
-on_failure :
-- ps: PrintLogs
-
-artifacts:
-  - path: '.\$(RELEASE_ZIPBALL).zip'
-    name: master
-    type: zip