Added: Ability to add custom formats, working similar to qualities. (#2669)

Originally called project metis, this feature allows you to do a lot of cool stuff, such as upgrading to a x265 encode, downloading releases with multiple languages, etc. Check out the wiki page at: https://github.com/Radarr/Radarr/wiki/Custom-Formats to learn more! Note: This feature is currently in "beta" and will get more tags and features in the future. Please let me know, if you have any issues and I hope this will allow for a lot of customization!

appveyor.yml

@@ -1,5 +1,7 @@
 version: '0.2.0.{build}'
 
+image: Visual Studio 2017
+
 assembly_info:
   patch: true
   file: 'src\NzbDrone.Common\Properties\SharedAssemblyInfo.cs'
@@ -12,6 +14,9 @@ environment:
 
 install:
   - git submodule update --init --recursive
+  
+#init:
+#  - ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
 
 build_script:
   - ps: ./build-appveyor.ps1
@@ -38,6 +43,7 @@ pull_requests:
   do_not_increment_build_number: true
 
 on_failure:
+#  - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
   - ps: Get-ChildItem .\_artifacts\*.zip | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
   - ps: Get-ChildItem .\_artifacts\*.exe | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
   - ps: Get-ChildItem .\_artifacts\*.tar.gz | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }