UI - Added --disable-forced-shutdown which does just that

UI - Don't kill new instances of Artemis launched within 8 seconds after shutdown
UI - Updated About tab

src/Artemis.UI.Shared/Artemis.UI.Shared.csproj

@@ -50,7 +50,6 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="WriteableBitmapEx" Version="1.6.7" />
   </ItemGroup>
   <ItemGroup>
     <Compile Remove="obj\x64\Debug\ColorPicker.g.cs" />

src/Artemis.UI.Shared/packages.lock.json

@@ -113,12 +113,6 @@
         "resolved": "0.4.0",
         "contentHash": "2Tzz6qoQNciyO4uT6wxByMiyvbve+u4eFIiDewDUbeHuxr/rKuba3/EhhXDsEH9WoKzYlpzqxDfQGPE/bIe5Rw=="
       },
-      "WriteableBitmapEx": {
-        "type": "Direct",
-        "requested": "[1.6.7, )",
-        "resolved": "1.6.7",
-        "contentHash": "GoPhIdYzG/DWJq/MADb8gFzRN5PsxM+1DSJFS8Jzupg4DXqFSnlejYEjJw4ffPEUyELL07O4XIGUZydE4jQK0Q=="
-      },
       "Castle.Core": {
         "type": "Transitive",
         "resolved": "4.2.0",