Added build options

dub.json

@@ -18,5 +18,20 @@
     ],
     "preBuildCommands": [
         "./install-debian-dependencies.sh"
+    ],
+    "buildTypes": {
+        "debug": {
+            "buildOptions": [
+                "debugMode",
+                "debugInfo"
             ]
+        },
+        "release": {
+            "buildOptions": [
+                "releaseMode",
+                "inline",
+                "optimize"
+            ]
+        }
+    }
 }

dub.settings.json

@@ -0,0 +1,4 @@
+{
+	"defaultArchitecture": "x86_64",
+	"defaultCompiler": "ldc2"
+}