Merge remote-tracking branch 'origin/master'

# Conflicts:
#	src/main/java/jota/IotaAPIProxy.java

src/main/java/jota/pow/Curl.java

@@ -1,4 +1,4 @@
-package jota.utils;
+package jota.pow;
 
 /**
  * (c) 2016 Come-from-Beyond

src/main/java/jota/utils/Checksum.java

@@ -2,6 +2,8 @@ package jota.utils;
 
 import org.apache.commons.lang3.StringUtils;
 
+import jota.pow.Curl;
+
 /**
  * Created by pinpong on 02.12.16.
  */

src/main/java/jota/utils/InputValidator.java

@@ -17,7 +17,7 @@ public class InputValidator {
         return true;
     }
 
-    public static boolean isTrytes(String trytes, int length) {
+    public static boolean isTrytes(final String trytes, final int length) {
         return trytes.matches("^[A-Z9]{" + (length == 0 ? "0," : length) + "}$");
     }
 }

src/main/java/jota/utils/Signing.java

@@ -4,6 +4,8 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
+import jota.pow.Curl;
+
 public class Signing {
 
     static int[] key(int[] seed, int index, int length) {