Added retention annotation for Alignment IntDef (#3)

app/build.gradle

@@ -16,6 +16,13 @@ android {
     lintOptions {
         abortOnError false
     }
+
+    buildTypes {
+        debug {
+            minifyEnabled true
+            proguardFile 'proguard.pro'
+        }
+    }
 }
 
 dependencies {

app/proguard.pro

@@ -0,0 +1,5 @@
+-dontwarn okhttp3.**
+-dontwarn okio.**
+
+-keep class com.caverock.androidsvg.** { *; }
+-dontwarn com.caverock.androidsvg.**

library/src/main/java/ru/noties/markwon/spans/AsyncDrawableSpan.java

@@ -9,10 +9,14 @@ import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.text.style.ReplacementSpan;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
 @SuppressWarnings("WeakerAccess")
 public class AsyncDrawableSpan extends ReplacementSpan {
 
     @IntDef({ALIGN_BOTTOM, ALIGN_BASELINE, ALIGN_CENTER})
+    @Retention(RetentionPolicy.SOURCE)
     @interface Alignment {
     }