Bump down lang. version & whitespace cleanup.

src/Discord.Net.Commands/Discord.Net.Commands.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="../../Discord.Net.targets" />
   <PropertyGroup>
     <AssemblyName>Discord.Net.Commands</AssemblyName>
@@ -6,9 +6,6 @@
     <Description>A Discord.Net extension adding support for bot commands.</Description>
     <TargetFrameworks>netstandard1.1</TargetFrameworks>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|netstandard1.1|AnyCPU'">
-    <LangVersion>7.3</LangVersion>
-  </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\Discord.Net.Core\Discord.Net.Core.csproj" />
   </ItemGroup>

src/Discord.Net.Commands/Extensions/CommandServiceExtensions.cs

@@ -9,7 +9,7 @@ namespace Discord.Commands
         public static async Task<IReadOnlyCollection<CommandInfo>> GetExecutableCommandsAsync(this IEnumerable<CommandInfo> commands, ICommandContext context, IServiceProvider provider)
         {
             var executableCommands = new List<CommandInfo>();
-            
+
             foreach (var command in commands)
             {
                 var result = await command.CheckPreconditionsAsync(context, provider).ConfigureAwait(false);
@@ -29,7 +29,7 @@ namespace Discord.Commands
 
             foreach (var subModule in module.Submodules)
                 executableCommands.AddRange(await subModule.GetExecutableCommandsAsync(context, provider).ConfigureAwait(false));
-            
+
             return executableCommands;
         }
     }