fix!: support null as option value (#221)

BREAKING-CHANGE: serialize options as JSON instead of TOML

build.gradle.kts

@@ -30,10 +30,17 @@ dependencies {
     implementation("com.github.revanced:jadb:master-SNAPSHOT") // updated fork
     implementation("com.android.tools.build:apksig:8.1.0-alpha09")
     implementation("org.bouncycastle:bcpkix-jdk15on:1.70")
-    implementation("cc.ekblad:4koma:1.1.0")
+    implementation("com.fasterxml.jackson.module:jackson-module-kotlin:2.14.+")
+    testImplementation("org.jetbrains.kotlin:kotlin-test:1.8.20-RC")
 }
 
 tasks {
+    test {
+        useJUnitPlatform()
+        testLogging {
+            events("PASSED", "SKIPPED", "FAILED")
+        }
+    }
     build {
         dependsOn(shadowJar)
     }