[config] Tweak docs

docs/libjf-config-v0.md

@@ -37,14 +37,18 @@ ConfigInstance.get("yourmod").write();
 ConfigHolder.getInstance().get("yourmod").write();
 ```
 
-LibJF config is only intended for simple config screens, it does not support nested classes, multiple pages or controls like sliders.
-Use something else for those
+LibJF config is intentionally designed to be easy to implement, pleasant for the user and somewhat lightweight.
+It is not intended to be used as a general purpose solution for everything, other libraries are better suited for that.
 
 ## Translations
 Config keys are translated as `<mod id>.jfconfig.<field name>`.
 You may add a tooltip as follows: `<mod id>.jfconfig.<field name>.tooltip`.
 Enum keys are translated as follows: `<mod id>.jfconfig.enum.<enum class name>.<entry name>`
 
+## Categories
+Categories can be added by creating public static subclasses in your config class and annotating them with @Category.
+Entries will be read as before, however translations for fields will use `jfconfig.<category>.<field name>` instead of `jfconfig.<field name>`
+
 ## Presets
 libjf-config-v0 provides a preset system to automatically fill in certain values based on a function.
 To add a snippet, add a public static method to your config class and annotate it with @Preset.

libjf-config-v0/src/testmod/java/io/gitlab/jfronny/libjf/config/test/TestConfig.java

@@ -3,6 +3,9 @@ package io.gitlab.jfronny.libjf.config.test;
 import io.gitlab.jfronny.libjf.config.api.*;
 import io.gitlab.jfronny.libjf.gson.GsonHidden;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class TestConfig implements JfConfig {
     @Entry public static boolean disablePacks = false;
     @Entry public static Boolean disablePacks2 = false;
@@ -13,6 +16,7 @@ public class TestConfig implements JfConfig {
     @Entry @GsonHidden public static String guiOnlyStr = "lolz";
     public static String gsonOnlyStr = "lolz";
     @Entry public static Test enumTest = Test.Test;
+    @Entry public static List<String> stringList;
 
     @Preset
     public static void moskau() {
@@ -29,6 +33,11 @@ public class TestConfig implements JfConfig {
         if (disablePacks) intTest = 0;
     }
 
+    @Verifier
+    public static void stringListVerifier() {
+        if (stringList == null) stringList = new ArrayList<>(List.of("Obama"));
+    }
+
     public enum Test {
         Test, ER
     }