Merge branch 'pr-65' into dev

# Conflicts:
#	README.md
#	address/README.md
#	address/pom.xml
#	bitstring/README.md
#	bitstring/pom.xml
#	cell/README.md
#	cell/pom.xml
#	emulator/README.md
#	emulator/pom.xml
#	fift/README.md
#	fift/pom.xml
#	func/README.md
#	func/pom.xml
#	liteclient/README.md
#	liteclient/pom.xml
#	mnemonic/README.md
#	mnemonic/pom.xml
#	pom.xml
#	smartcontract/README.md
#	smartcontract/pom.xml
#	tl/pom.xml
#	tonconnect/README.md
#	tonconnect/pom.xml
#	tonlib/README.md
#	tonlib/pom.xml
#	tweetnacl-java-8/pom.xml
#	utils/README.md
#	utils/pom.xml

cell/src/main/java/org/ton/java/cell/Cell.java

@@ -568,7 +568,15 @@ static BocFlags parseBocFlags(byte data) {
    * @return String
    */
   public String print(String indent) {
-    StringBuilder s = new StringBuilder(indent + "x{" + bits.toHex() + "}\n");
+    String t = "x";
+    if (this.type == CellType.MERKLE_PROOF) {
+      t = "p";
+    } else if (this.type == CellType.MERKLE_UPDATE) {
+      t = "u";
+    } else if (this.type == CellType.PRUNED_BRANCH) {
+      t = "P";
+    }
+    StringBuilder s = new StringBuilder(indent + t + "{" + bits.toHex() + "}\n");
     if (nonNull(refs) && !refs.isEmpty()) {
       for (Cell i : refs) {
         if (nonNull(i)) {
@@ -580,15 +588,7 @@ public String print(String indent) {
   }
 
   public String print() {
-    StringBuilder s = new StringBuilder("x{" + bits.toHex() + "}\n");
-    if (nonNull(refs) && !refs.isEmpty()) {
-      for (Cell i : refs) {
-        if (nonNull(i)) {
-          s.append(i.print(" "));
-        }
-      }
-    }
-    return s.toString();
+    return print("");
   }
 
   /** Saves BoC to file */

cell/src/main/java/org/ton/java/cell/CellBuilder.java

@@ -38,6 +38,7 @@ public static CellBuilder beginCell(int bitSize) {
      * Converts a builder into an ordinary cell.
      */
     public Cell endCell() {
+        cell.levelMask = cell.resolveMask();
         if (cell.getHashes().length == 0) {
             cell.calculateHashes();
         }