fixed space skipping and decimal literals in Lexer

src/Lexer.fu

@@ -55,10 +55,12 @@ class Lexer {
                 // try end token and skip current char
                 case ' ': case '\t': case '\n': case '\r':
                     TryEndToken();
+                    tokBegin++;
                     break;
                 // move next
                 case '0': case '1': case '2': case '3': case '4':
                 case '5': case '6': case '7': case '8': case '9':
+                case '.':
                     break;
                 // set type from Numeric to Literal
                 default:

src/MainClass.fu

@@ -7,7 +7,7 @@ public static class MainClass {
         #endif
         string() joined = "";
         foreach(string arg in args){
-            joined += arg;
+            joined += arg + " ";
         }
         double rezult = Calculator.Calculate(joined);
         Console.WriteLine(rezult);