Migrate to .NET 6

Author: joshkempner

.gitignore

@@ -3,14 +3,14 @@
 ################################################################################
 
 *.suo
-/Cosmic.NET/.vs/Cosmic.NET/v15/Server/sqlite3
+/Cosmic.NET/.vs
+/Cosmic.NET/Cosmic.NET/bin
 /Cosmic.NET/Cosmic.NET/obj
 /Cosmic.NET/Cosmic.NET.WPF/bin
 /Cosmic.NET/Cosmic.NET.WPF/obj
-/Cosmic.NET/Cosmic.NET/bin
 /Cosmic.NET/cosmo/bin
 /Cosmic.NET/cosmo/obj
 /Cosmic.NET/packages
 *.user
 *.dtbcache
-/Cosmic.NET/.vs/Cosmic.NET/v16/TestStore/0
+*.dtbcache.v2

Cosmic.NET/.vs/Cosmic.NET/DesignTimeBuild/.dtbcache.v2

@@ -1,11 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net5.0-windows</TargetFramework>
+    <TargetFramework>net6.0-windows</TargetFramework>
     <UseWPF>true</UseWPF>
-    <Version>1.2.0</Version>
-    <AssemblyVersion>1.2.0</AssemblyVersion>
-    <FileVersion>1.2.0</FileVersion>
+    <Version>1.2.1</Version>
+    <AssemblyVersion>1.2.1</AssemblyVersion>
+    <FileVersion>1.2.1</FileVersion>
     <Copyright>Copyright © Joshua Kempner 2008-2021</Copyright>
   </PropertyGroup>
   <ItemGroup>

Cosmic.NET/Cosmic.NET.WPF/Cosmic.NET.WPF.csproj

@@ -1,11 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net5.0-windows</TargetFramework>
+    <TargetFramework>net6.0-windows</TargetFramework>
     <UseWindowsForms>true</UseWindowsForms>
-    <Version>1.2.0</Version>
-    <AssemblyVersion>1.2.0</AssemblyVersion>
-    <FileVersion>1.2.0</FileVersion>
+    <Version>1.2.1</Version>
+    <AssemblyVersion>1.2.1</AssemblyVersion>
+    <FileVersion>1.2.1</FileVersion>
     <Copyright>Copyright © Joshua Kempner 2008-2021</Copyright>
   </PropertyGroup>
   <ItemGroup>

Cosmic.NET/Cosmic.NET/Cosmic.NET.csproj

@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
-    <Version>1.2.0</Version>
-    <AssemblyVersion>1.2.0</AssemblyVersion>
-    <FileVersion>1.2.0</FileVersion>
+    <TargetFramework>net6.0</TargetFramework>
+    <Version>1.2.1</Version>
+    <AssemblyVersion>1.2.1</AssemblyVersion>
+    <FileVersion>1.2.1</FileVersion>
     <Copyright>Copyright © Joshua Kempner 2008-2021</Copyright>
   </PropertyGroup>
   <ItemGroup>