CI cleanup/updates

- Create versioned snapshots
  - include MacOS build -- still needs test and deploy steps
  - include barcode and libqrencode in Linux build
  - include libqrencode in Windows build

  Updated README and TODO files.

.appveyor.yml

@@ -1,7 +1,6 @@
 # Build glabels windows installer.
 #
-# Currently, only builds snapshots and is truggered by the travis CI AppImage build, which
-# moves the "continuous" release/tag to head.  This script deploys into this moved release.
+# Currently, only builds snapshots and is triggered by the travis CI build.
 
 
 version: 3.99.0.{build}
@@ -23,25 +22,32 @@ init:
   - git config --global core.autocrlf true
 
 install:
+  # Locate Qt installation
   - set QTDIR=c:\Qt\5.11\msvc2017_64
-  - set PATH=%PATH%;%QTDIR%/bin
+  - set PATH=%PATH%;%QTDIR%\bin
+  # Zlib and QREncode
+  - vcpkg install zlib:x64-windows
+  - vcpkg install libqrencode:x64-windows
+  - vcpkg integrate install
   
 build_script:
   - git checkout master # re-attach to master to satisfy auto version tooling
   - mkdir build
   - cd build
-  - cmake -G "Visual Studio 15 2017 Win64" -DCMAKE_PREFIX_PATH=%QTDIR% ..
+  - cmake -G "Visual Studio 15 2017 Win64" .. -DCMAKE_PREFIX_PATH=%QTDIR% -DCMAKE_TOOLCHAIN_FILE=C:/Tools/vcpkg/scripts/buildsystems/vcpkg.cmake
   - cmake --build . --config Release
   - ctest -C Release
   - cpack -C Release -G NSIS64
+  - set /P VERSION=<VERSION
+  - move glabels-3.99.0-win64.exe glabels-%VERSION%-win64.exe
 
 artifacts:
-  - path: build\glabels-3.99.0-win64.exe
+  - path: build\glabels-%VERSION%-win64.exe
     name: windows-installer
 
 deploy:
   - provider: GitHub
-    release: continuous
+    release: glabels-%VERSION%
     artifact: windows-installer
     auth_token:
       secure: mPNNgwWP58gu4eA2wVwGkGWNTzJigKj1g/XjsZ9vk03rLMmf5fxC/XNr15fPBCi8