Add cache invalidation methods and update project version to 1.1.

.idea/gradle.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>

.idea/material_theme_project_new.xml

@@ -3,7 +3,9 @@
   <component name="MaterialThemeProjectNewConfig">
     <option name="metadata">
       <MTProjectMetadataState>
-        <option name="userId" value="69332f14:19db8254562:-7eee" />
+        <option name="migrated" value="true" />
+        <option name="pristineConfig" value="false" />
+        <option name="userId" value="6d276d29:1992daa6e45:-7ffe" />
       </MTProjectMetadataState>
     </option>
   </component>

build.gradle

@@ -4,7 +4,7 @@ plugins {
 }
 
 group = 'de.catmangames.jsonfetcher'
-version = '1.0'
+version = '1.1'
 
 java {
     sourceCompatibility = JavaVersion.VERSION_11

src/main/java/de/catmangames/jsonfetcher/JsonFetcher.java

@@ -38,6 +38,18 @@ public class JsonFetcher {
         return gson.fromJson(getRaw(path), type.getType());
     }
 
+    // Einzelnen Eintrag invalidieren
+    public void invalidate(String path) {
+        cacheData.remove(path);
+        cacheTimestamps.remove(path);
+    }
+
+    // Gesamten Cache leeren
+    public void invalidateAll() {
+        cacheData.clear();
+        cacheTimestamps.clear();
+    }
+
     private String getRaw(String path) throws IOException {
         if (cacheTtlMs > 0 && cacheData.containsKey(path)) {
             long age = System.currentTimeMillis() - cacheTimestamps.get(path)[0];