migrate to gradle

build.gradle

@@ -0,0 +1,43 @@
+project.version = "0.0.1"
+project.group = "com.github.insanusmokrassar"
+
+buildscript {
+    repositories {
+        mavenLocal()
+        jcenter()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath "org.jetbrains.kotlin:kotlin-serialization:$kotlin_version"
+        classpath "com.jfrog.bintray.gradle:gradle-bintray-plugin:$gradle_bintray_plugin_version"
+    }
+}
+
+apply plugin: 'java-library'
+apply plugin: 'kotlin'
+apply plugin: 'kotlinx-serialization'
+
+repositories {
+    mavenLocal()
+    jcenter()
+    mavenCentral()
+    maven { url "https://kotlin.bintray.com/kotlinx" }
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$kotlin_coroutines_version"
+    implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime:$kotlin_serialisation_runtime_version"
+    implementation "joda-time:joda-time:$joda_time_version"
+
+    // Use JUnit test framework
+    testImplementation 'junit:junit:4.12'
+}
+
+compileKotlin {
+    kotlinOptions {
+        freeCompilerArgs = [ disableImplicitReflectionSerializerAnnotation ]
+    }
+}