Impl AttackModifier Plugin Commands (#140, #141)

Update version to v1.7.3
Update CommandVersion to v1.4.3

Source/GrasscutterTools/Properties/AssemblyInfo.cs

@@ -31,5 +31,5 @@ using System.Runtime.InteropServices;
 //可以指定所有这些值，也可以使用“生成号”和“修订号”的默认值
 //通过使用 "*"，如下所示:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.7.2")]
+[assembly: AssemblyVersion("1.7.3")]
 [assembly: AssemblyFileVersion("1.7.0")]