Improve various small code quality issues

src/main/java/wtf/beatrice/hidekobot/util/FormatUtil.java

@@ -70,7 +70,9 @@ public class FormatUtil
             if(hours == 0)
             {
                 if(minutes == 0)
-                {} else { // i know this if has an empty body but i feel like this reads better
+                {
+                    // empty code block because it makes the code easier to read
+                } else {
                     uptimeStringBuilder.append(minutes).append("m ");
                 }
             } else {

src/main/java/wtf/beatrice/hidekobot/util/Logger.java

@@ -5,8 +5,8 @@ import java.time.format.DateTimeFormatter;
 import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
 
-@Deprecated
-public class Logger
+@Deprecated(since = "0.5.16", forRemoval = true)
+public class Logger<T>
 {
 
     // objects that we need to have for a properly formatted message
@@ -17,7 +17,7 @@ public class Logger
 
 
     // when initializing a new logger, save variables in that instance
-    public Logger(Class logClass)
+    public Logger(Class<T> logClass)
     {
         className = logClass.getSimpleName();
     }

src/main/java/wtf/beatrice/hidekobot/util/SerializationUtil.java

@@ -10,7 +10,7 @@ import java.util.List;
 public class SerializationUtil
 {
 
-    public static String serializeBase64(List dataList) {
+    public static <T> String serializeBase64(List<T> dataList) {
 
         try (ByteArrayOutputStream bo = new ByteArrayOutputStream();
              ObjectOutputStream so = new ObjectOutputStream(bo)) {
@@ -23,7 +23,7 @@ public class SerializationUtil
         }
     }
 
-    public static LinkedList deserializeBase64(String dataStr) {
+    public static <T> LinkedList<T> deserializeBase64(String dataStr) {
 
         byte[] b = Base64.getDecoder().decode(dataStr);
         ByteArrayInputStream bi = new ByteArrayInputStream(b);