diff --git a/README.md b/README.md
index 733a2ed..545c0e7 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,9 @@
 # java-etherscan-api
 
+[![GitHub Action](https://github.com/goodforgod/java-etherscan-api/workflows/Java%20CI/badge.svg)](https://github.com/GoodforGod/dummymaker/actions?query=workflow%3A%22Java+CI%22)
+[![Coverage](https://sonarcloud.io/api/project_badges/measure?project=GoodforGod_java-etherscan-api&metric=coverage)](https://sonarcloud.io/dashboard?id=GoodforGod_dummymaker)
+[![Maintainability Rating](https://sonarcloud.io/api/project_badges/measure?project=GoodforGod_java-etherscan-api&metric=sqale_rating)](https://sonarcloud.io/dashboard?id=GoodforGod_dummymaker)
+[![Lines of Code](https://sonarcloud.io/api/project_badges/measure?project=GoodforGod_java-etherscan-api&metric=ncloc)](https://sonarcloud.io/dashboard?id=GoodforGod_dummymaker)
 [![Jitpack](https://jitpack.io/v/iSnow/java-etherscan-api.svg)](https://jitpack.io/#GoodforGod/java-etherscan-api)
 
 [Etherscan](https://etherscan.io/apis) Java API implementation.
@@ -163,6 +167,8 @@ Token API methods migrated to [Account](#account-api) & [Stats](#stats-api) resp
 
 ## Version History
 
+**1.1.0** - Improved error handling, QueueManager improved, Gradle 6.7 instead of Maven, GitHub CI, Sonarcloud analyzer, dependencies updated.
+
 **1.0.2** - Minor http client improvements.
 
 **1.0.1** - Gorli & TOBALABA networks support.
@@ -171,4 +177,4 @@ Token API methods migrated to [Account](#account-api) & [Stats](#stats-api) resp
 
 ## License
 
-This project is licensed under the MIT - see the [LICENSE](LICENSE) file for details.
+This project licensed under the MIT - see the [LICENSE](LICENSE) file for details.
diff --git a/gradle.properties b/gradle.properties
index 0c89028..1fa1ad4 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 groupId=com.github.goodforgod
 artifactId=java-etherscan-api
-artifactVersion=1.1.0-SNAPSHOT
+artifactVersion=1.1.0
 buildNumber=1
 
 
diff --git a/src/main/java/io/api/etherscan/core/impl/BasicProvider.java b/src/main/java/io/api/etherscan/core/impl/BasicProvider.java
index cf16337..b89447a 100644
--- a/src/main/java/io/api/etherscan/core/impl/BasicProvider.java
+++ b/src/main/java/io/api/etherscan/core/impl/BasicProvider.java
@@ -46,10 +46,8 @@ abstract class BasicProvider {
     <T> T convert(final String json, final Class<T> tClass) {
         try {
             final T t = gson.fromJson(json, tClass);
-            if (t instanceof StringResponseTO) {
-                if (((StringResponseTO) t).getResult().startsWith("Max rate limit reached")) {
-                    throw new RateLimitException(((StringResponseTO) t).getResult());
-                }
+            if (t instanceof StringResponseTO && ((StringResponseTO) t).getResult().startsWith("Max rate limit reached")) {
+                throw new RateLimitException(((StringResponseTO) t).getResult());
             }
 
             return t;
diff --git a/src/main/java/io/api/etherscan/manager/impl/FakeQueueManager.java b/src/main/java/io/api/etherscan/manager/impl/FakeQueueManager.java
index d8bc048..e797f8b 100644
--- a/src/main/java/io/api/etherscan/manager/impl/FakeQueueManager.java
+++ b/src/main/java/io/api/etherscan/manager/impl/FakeQueueManager.java
@@ -11,5 +11,8 @@
 public class FakeQueueManager implements IQueueManager {
 
     @Override
-    public void takeTurn() {}
+    public void takeTurn() {
+        // no limit or await provided for fake impl so rate limit exception will be
+        // thrown if too many calls
+    }
 }
diff --git a/src/main/java/io/api/etherscan/model/Balance.java b/src/main/java/io/api/etherscan/model/Balance.java
index 5529a90..cbd8502 100644
--- a/src/main/java/io/api/etherscan/model/Balance.java
+++ b/src/main/java/io/api/etherscan/model/Balance.java
@@ -3,6 +3,7 @@
 import io.api.etherscan.model.utility.BalanceTO;
 
 import java.math.BigInteger;
+import java.util.Objects;
 
 /**
  * ! NO DESCRIPTION !
@@ -63,7 +64,7 @@ public boolean equals(Object o) {
 
         if (!balance.equals(balance1.balance))
             return false;
-        return address != null ? address.equals(balance1.address) : balance1.address == null;
+        return Objects.equals(address, balance1.address);
     }
 
     @Override
diff --git a/src/main/java/io/api/etherscan/model/BaseTx.java b/src/main/java/io/api/etherscan/model/BaseTx.java
index 5aea827..a219e57 100644
--- a/src/main/java/io/api/etherscan/model/BaseTx.java
+++ b/src/main/java/io/api/etherscan/model/BaseTx.java
@@ -5,6 +5,7 @@
 import java.math.BigInteger;
 import java.time.LocalDateTime;
 import java.time.ZoneOffset;
+import java.util.Objects;
 
 /**
  * ! NO DESCRIPTION !
@@ -33,7 +34,7 @@ public long getBlockNumber() {
 
     public LocalDateTime getTimeStamp() {
         if (_timeStamp == null && !BasicUtils.isEmpty(timeStamp))
-            _timeStamp = LocalDateTime.ofEpochSecond(Long.valueOf(timeStamp), 0, ZoneOffset.UTC);
+            _timeStamp = LocalDateTime.ofEpochSecond(Long.parseLong(timeStamp), 0, ZoneOffset.UTC);
         return _timeStamp;
     }
 
@@ -81,15 +82,15 @@ public boolean equals(Object o) {
 
         if (blockNumber != baseTx.blockNumber)
             return false;
-        if (timeStamp != null ? !timeStamp.equals(baseTx.timeStamp) : baseTx.timeStamp != null)
+        if (!Objects.equals(timeStamp, baseTx.timeStamp))
             return false;
-        if (hash != null ? !hash.equals(baseTx.hash) : baseTx.hash != null)
+        if (!Objects.equals(hash, baseTx.hash))
             return false;
-        if (from != null ? !from.equals(baseTx.from) : baseTx.from != null)
+        if (!Objects.equals(from, baseTx.from))
             return false;
-        if (to != null ? !to.equals(baseTx.to) : baseTx.to != null)
+        if (!Objects.equals(to, baseTx.to))
             return false;
-        return value != null ? value.equals(baseTx.value) : baseTx.value == null;
+        return Objects.equals(value, baseTx.value);
     }
 
     @Override
diff --git a/src/main/java/io/api/etherscan/model/Block.java b/src/main/java/io/api/etherscan/model/Block.java
index 2e9b96b..d328841 100644
--- a/src/main/java/io/api/etherscan/model/Block.java
+++ b/src/main/java/io/api/etherscan/model/Block.java
@@ -26,7 +26,7 @@ public long getBlockNumber() {
 
     public LocalDateTime getTimeStamp() {
         if (_timeStamp == null && !BasicUtils.isEmpty(timeStamp))
-            _timeStamp = LocalDateTime.ofEpochSecond(Long.valueOf(timeStamp), 0, ZoneOffset.UTC);
+            _timeStamp = LocalDateTime.ofEpochSecond(Long.parseLong(timeStamp), 0, ZoneOffset.UTC);
         return _timeStamp;
     }
 
diff --git a/src/main/java/io/api/etherscan/model/Log.java b/src/main/java/io/api/etherscan/model/Log.java
index 2a7cc09..4649d6b 100644
--- a/src/main/java/io/api/etherscan/model/Log.java
+++ b/src/main/java/io/api/etherscan/model/Log.java
@@ -6,6 +6,7 @@
 import java.time.LocalDateTime;
 import java.time.ZoneOffset;
 import java.util.List;
+import java.util.Objects;
 
 /**
  * ! NO DESCRIPTION !
@@ -124,15 +125,15 @@ public boolean equals(Object o) {
 
         Log log = (Log) o;
 
-        if (blockNumber != null ? !blockNumber.equals(log.blockNumber) : log.blockNumber != null)
+        if (!Objects.equals(blockNumber, log.blockNumber))
             return false;
-        if (address != null ? !address.equals(log.address) : log.address != null)
+        if (!Objects.equals(address, log.address))
             return false;
-        if (transactionHash != null ? !transactionHash.equals(log.transactionHash) : log.transactionHash != null)
+        if (!Objects.equals(transactionHash, log.transactionHash))
             return false;
-        if (timeStamp != null ? !timeStamp.equals(log.timeStamp) : log.timeStamp != null)
+        if (!Objects.equals(timeStamp, log.timeStamp))
             return false;
-        return logIndex != null ? logIndex.equals(log.logIndex) : log.logIndex == null;
+        return Objects.equals(logIndex, log.logIndex);
     }
 
     @Override
diff --git a/src/main/java/io/api/etherscan/model/Price.java b/src/main/java/io/api/etherscan/model/Price.java
index 9a37592..d2c6d1c 100644
--- a/src/main/java/io/api/etherscan/model/Price.java
+++ b/src/main/java/io/api/etherscan/model/Price.java
@@ -28,13 +28,13 @@ public double inBtc() {
 
     public LocalDateTime usdTimestamp() {
         if (_ethusd_timestamp == null)
-            _ethusd_timestamp = LocalDateTime.ofEpochSecond(Long.valueOf(ethusd_timestamp), 0, ZoneOffset.UTC);
+            _ethusd_timestamp = LocalDateTime.ofEpochSecond(Long.parseLong(ethusd_timestamp), 0, ZoneOffset.UTC);
         return _ethusd_timestamp;
     }
 
     public LocalDateTime btcTimestamp() {
         if (_ethbtc_timestamp == null)
-            _ethbtc_timestamp = LocalDateTime.ofEpochSecond(Long.valueOf(ethbtc_timestamp), 0, ZoneOffset.UTC);
+            _ethbtc_timestamp = LocalDateTime.ofEpochSecond(Long.parseLong(ethbtc_timestamp), 0, ZoneOffset.UTC);
         return _ethbtc_timestamp;
     }
 
diff --git a/src/main/java/io/api/etherscan/model/Status.java b/src/main/java/io/api/etherscan/model/Status.java
index 4a1fe18..9683bde 100644
--- a/src/main/java/io/api/etherscan/model/Status.java
+++ b/src/main/java/io/api/etherscan/model/Status.java
@@ -1,5 +1,7 @@
 package io.api.etherscan.model;
 
+import java.util.Objects;
+
 /**
  * Contract Execution Status
  *
@@ -33,7 +35,7 @@ public boolean equals(Object o) {
 
         if (isError != status.isError)
             return false;
-        return errDescription != null ? errDescription.equals(status.errDescription) : status.errDescription == null;
+        return Objects.equals(errDescription, status.errDescription);
     }
 
     @Override
diff --git a/src/main/java/io/api/etherscan/model/TokenBalance.java b/src/main/java/io/api/etherscan/model/TokenBalance.java
index e198079..d057992 100644
--- a/src/main/java/io/api/etherscan/model/TokenBalance.java
+++ b/src/main/java/io/api/etherscan/model/TokenBalance.java
@@ -1,6 +1,7 @@
 package io.api.etherscan.model;
 
 import java.math.BigInteger;
+import java.util.Objects;
 
 /**
  * ! NO DESCRIPTION !
@@ -31,8 +32,7 @@ public boolean equals(Object o) {
             return false;
 
         TokenBalance that = (TokenBalance) o;
-
-        return tokenContract != null ? tokenContract.equals(that.tokenContract) : that.tokenContract == null;
+        return Objects.equals(tokenContract, that.tokenContract);
     }
 
     @Override
diff --git a/src/main/java/io/api/etherscan/model/Tx.java b/src/main/java/io/api/etherscan/model/Tx.java
index 6fce75b..4136d23 100644
--- a/src/main/java/io/api/etherscan/model/Tx.java
+++ b/src/main/java/io/api/etherscan/model/Tx.java
@@ -3,6 +3,7 @@
 import io.api.etherscan.util.BasicUtils;
 
 import java.math.BigInteger;
+import java.util.Objects;
 
 /**
  * ! NO DESCRIPTION !
@@ -70,9 +71,9 @@ public boolean equals(Object o) {
             return false;
         if (transactionIndex != tx.transactionIndex)
             return false;
-        if (blockHash != null ? !blockHash.equals(tx.blockHash) : tx.blockHash != null)
+        if (!Objects.equals(blockHash, tx.blockHash))
             return false;
-        return isError != null ? isError.equals(tx.isError) : tx.isError == null;
+        return Objects.equals(isError, tx.isError);
     }
 
     @Override
diff --git a/src/main/java/io/api/etherscan/model/TxInternal.java b/src/main/java/io/api/etherscan/model/TxInternal.java
index e7b75d9..22c5104 100644
--- a/src/main/java/io/api/etherscan/model/TxInternal.java
+++ b/src/main/java/io/api/etherscan/model/TxInternal.java
@@ -1,5 +1,7 @@
 package io.api.etherscan.model;
 
+import java.util.Objects;
+
 /**
  * ! NO DESCRIPTION !
  *
@@ -44,7 +46,7 @@ public boolean equals(Object o) {
 
         if (traceId != that.traceId)
             return false;
-        return errCode != null ? errCode.equals(that.errCode) : that.errCode == null;
+        return Objects.equals(errCode, that.errCode);
     }
 
     @Override
diff --git a/src/main/java/io/api/etherscan/model/Wei.java b/src/main/java/io/api/etherscan/model/Wei.java
index 35f90d0..eddf8d2 100644
--- a/src/main/java/io/api/etherscan/model/Wei.java
+++ b/src/main/java/io/api/etherscan/model/Wei.java
@@ -1,6 +1,7 @@
 package io.api.etherscan.model;
 
 import java.math.BigInteger;
+import java.util.Objects;
 
 /**
  * ! NO DESCRIPTION !
@@ -46,8 +47,7 @@ public boolean equals(Object o) {
             return false;
 
         Wei wei = (Wei) o;
-
-        return result != null ? result.equals(wei.result) : wei.result == null;
+        return Objects.equals(result, wei.result);
     }
 
     @Override
diff --git a/src/main/java/io/api/etherscan/model/utility/BaseResponseTO.java b/src/main/java/io/api/etherscan/model/utility/BaseResponseTO.java
index 144deef..d3653e2 100644
--- a/src/main/java/io/api/etherscan/model/utility/BaseResponseTO.java
+++ b/src/main/java/io/api/etherscan/model/utility/BaseResponseTO.java
@@ -14,7 +14,7 @@ public abstract class BaseResponseTO {
     private String message;
 
     public int getStatus() {
-        return (BasicUtils.isEmpty(status)) ? -1 : Integer.valueOf(status);
+        return BasicUtils.isEmpty(status) ? -1 : Integer.parseInt(status);
     }
 
     public String getMessage() {
diff --git a/src/main/java/io/api/etherscan/model/utility/BlockParam.java b/src/main/java/io/api/etherscan/model/utility/BlockParam.java
index cbc5a3e..0f027ec 100644
--- a/src/main/java/io/api/etherscan/model/utility/BlockParam.java
+++ b/src/main/java/io/api/etherscan/model/utility/BlockParam.java
@@ -8,8 +8,8 @@
  */
 public class BlockParam {
 
-    private long startBlock;
-    private long endBlock;
+    private final long startBlock;
+    private final long endBlock;
 
     public BlockParam(long startBlock, long endBlock) {
         this.startBlock = startBlock;
diff --git a/src/main/java/io/api/etherscan/util/BasicUtils.java b/src/main/java/io/api/etherscan/util/BasicUtils.java
index 0d2a654..96b855d 100644
--- a/src/main/java/io/api/etherscan/util/BasicUtils.java
+++ b/src/main/java/io/api/etherscan/util/BasicUtils.java
@@ -26,6 +26,8 @@ public class BasicUtils {
     private static final Pattern TXHASH_PATTERN = Pattern.compile("0x[a-zA-Z0-9]{64}");
     private static final Pattern HEX_PATTERN = Pattern.compile("[a-zA-Z0-9]+");
 
+    private BasicUtils() {}
+
     public static boolean isEmpty(String value) {
         return value == null || value.isEmpty();
     }
@@ -42,14 +44,8 @@ public static BlockParam compensateBlocks(long startBlock, long endBlock) {
         long startCompensated = compensateMinBlock(startBlock);
         long endCompensated = compensateMaxBlock(endBlock);
 
-        final long startFinal = (startCompensated > endCompensated)
-                ? endCompensated
-                : startCompensated;
-
-        final long endFinal = (startCompensated > endCompensated)
-                ? startCompensated
-                : endCompensated;
-
+        final long startFinal = Math.min(startCompensated, endCompensated);
+        final long endFinal = Math.max(startCompensated, endCompensated);
         return new BlockParam(startFinal, endFinal);
     }
 
diff --git a/src/test/java/io/api/etherscan/statistic/StatisticPriceApiTest.java b/src/test/java/io/api/etherscan/statistic/StatisticPriceApiTest.java
index 3245b17..e29a6b1 100644
--- a/src/test/java/io/api/etherscan/statistic/StatisticPriceApiTest.java
+++ b/src/test/java/io/api/etherscan/statistic/StatisticPriceApiTest.java
@@ -18,8 +18,8 @@ public void correct() {
         assertNotNull(price);
         assertNotNull(price.btcTimestamp());
         assertNotNull(price.usdTimestamp());
-        assertNotEquals(0, price.inBtc());
-        assertNotEquals(0, price.inUsd());
+        assertNotEquals(0.0, price.inBtc());
+        assertNotEquals(0.0, price.inUsd());
         assertNotNull(price.toString());
 
         Price empty = new Price();
diff --git a/src/test/java/io/api/manager/QueueManagerTest.java b/src/test/java/io/api/manager/QueueManagerTest.java
index acc7b43..74e674c 100644
--- a/src/test/java/io/api/manager/QueueManagerTest.java
+++ b/src/test/java/io/api/manager/QueueManagerTest.java
@@ -23,6 +23,7 @@ public void fakeManager() {
         fakeManager.takeTurn();
         fakeManager.takeTurn();
         fakeManager.takeTurn();
+        assertNotNull(fakeManager);
     }
 
     @Test(timeout = 3500)
@@ -30,6 +31,7 @@ public void queueManager() {
         IQueueManager queueManager = new QueueManager(1, 3);
         queueManager.takeTurn();
         queueManager.takeTurn();
+        assertNotNull(queueManager);
     }
 
     @Test(timeout = 4500)
@@ -37,6 +39,7 @@ public void queueManagerWithDelay() {
         IQueueManager queueManager = new QueueManager(1, 2, 2);
         queueManager.takeTurn();
         queueManager.takeTurn();
+        assertNotNull(queueManager);
     }
 
     @Test