Fix version numbers

dub.json

@@ -1,7 +1,7 @@
 {
     "name": "dfmt",
     "description": "Dfmt is a formatter for D source code",
-    "version": "0.2.2",
+    "version": "0.3.0,
     "targetType": "executable",
 	"license": "BSL-1.0",
     "dependencies": {

src/dfmt/main.d

@@ -62,7 +62,6 @@ else
                 "indent_style|t", &optConfig.indent_style,
                 "inplace", &inplace,
                 "max_line_length", &optConfig.max_line_length,
-                "max_line_length", &optConfig.max_line_length,
                 "outdent_attributes", &handleBooleans,
                 "outdent_labels", &handleBooleans,
                 "space_after_cast", &handleBooleans,
@@ -144,7 +143,7 @@ else
 
 private void printHelp()
 {
-    writeln(`dfmt 0.3.0-dev
+    writeln(`dfmt 0.3.0
 
 Options:
     --help | -h            Print this help message