Android loading may fallback to standard JVM (#9)

* Android loading may fallback to standard JVM

* Java code must target JVM 1.8 in order to be compatible Android.

Co-authored-by: Salomon BRYS <salomon@kodein.net>

jni/build.gradle.kts

@@ -3,6 +3,11 @@ plugins {
     `maven-publish`
 }
 
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
+
 kotlin {
     explicitApi()
 }