Update version and reword a message

GCMM/GCMM.csproj

@@ -6,9 +6,7 @@
     <UseWindowsForms>true</UseWindowsForms>
     <SignAssembly>false</SignAssembly>
     <ApplicationIcon>favicon.ico</ApplicationIcon>
-    <AssemblyVersion>1.2.0.0</AssemblyVersion>
-    <FileVersion>1.2.0.0</FileVersion>
-    <Version>1.2.0</Version>
+    <Version>1.3.0</Version>
     <Authors>NorbiPeti</Authors>
     <Company>ExMods</Company>
     <Description>A mod manager for Gamecraft. It automatically downloads and runs GCIPA and allows the user to install mods.</Description>

GCMM/MainModInstaller.cs

@@ -160,8 +160,10 @@ namespace GCMM
             var gcmapi = mods["GamecraftModdingAPI"];
             if (!gcmapi.Installed || gcmapi.Updatable)
             {
-                if (MessageBox.Show($"GamecraftModdingAPI will be {(gcmapi.Installed ? "updated" : "installed")} as most mods need it to work. You can uninstall it if you're sure you don't need it.", "API needed", MessageBoxButtons.OKCancel)
-                    == DialogResult.OK)
+                if (MessageBox.Show(gcmapi.Installed ?
+                    "GamecraftModdingAPI will be updated as there's a new version available. It's needed for most mods to function."
+                    : "GamecraftModdingAPI will be installed as most mods need it to work. You can uninstall it if you're sure you don't need it.", "API needed",
+                    MessageBoxButtons.OKCancel) == DialogResult.OK)
                     await InstallMod(gcmapi);
             }
         }