Enhancement

- Implemented leftJustify, rightJustify for composing justified strings.

src/text.h

@@ -66,6 +66,8 @@ std::string format (int);
 std::string formatHex (int);
 std::string format (float, int, int);
 std::string format (double, int, int);
+std::string leftJustify (const std::string&, const int);
+std::string rightJustify (const std::string&, const int);
 
 // UTF-8 aware.
 int characters (const std::string&);