Fix[build]: put exp4j into the repository instead of relying on jitpack

app_pojavlauncher/build.gradle

@@ -210,7 +210,8 @@ dependencies {
     // implementation 'com.intuit.ssp:ssp-android:1.0.5'
 
     implementation 'org.tukaani:xz:1.8'
-    implementation 'com.github.PojavLauncherTeam:exp4j:60eaec6f78'
+    // Our version of exp4j can be built from source at
+    // https://github.com/PojavLauncherTeam/exp4j
     implementation 'net.sourceforge.htmlcleaner:htmlcleaner:2.6.1'
     implementation 'com.bytedance:bytehook:1.0.9'