Implement group story notifications.

app/src/main/java/org/thoughtcrime/securesms/blurhash/BlurHash.java

@@ -1,5 +1,8 @@
 package org.thoughtcrime.securesms.blurhash;
 
+import android.os.Parcel;
+import android.os.Parcelable;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
@@ -9,7 +12,7 @@ import java.util.Objects;
  * A BlurHash is a compact string representation of a blurred image that we can use to show fast
  * image previews.
  */
-public class BlurHash {
+public class BlurHash implements Parcelable {
 
   private final String hash;
 
@@ -17,6 +20,20 @@ public class BlurHash {
     this.hash = hash;
   }
 
+  protected BlurHash(Parcel in) {
+    hash = in.readString();
+  }
+
+  @Override
+  public void writeToParcel(Parcel dest, int flags) {
+    dest.writeString(hash);
+  }
+
+  @Override
+  public int describeContents() {
+    return 0;
+  }
+
   public static @Nullable BlurHash parseOrNull(@Nullable String hash) {
     if (Base83.isValid(hash)) {
       return new BlurHash(hash);
@@ -40,4 +57,16 @@ public class BlurHash {
   public int hashCode() {
     return Objects.hash(hash);
   }
+
+  public static final Creator<BlurHash> CREATOR = new Creator<BlurHash>() {
+    @Override
+    public BlurHash createFromParcel(Parcel in) {
+      return new BlurHash(in);
+    }
+
+    @Override
+    public BlurHash[] newArray(int size) {
+      return new BlurHash[size];
+    }
+  };
 }