diff --git a/build_system.d b/build_system.d
index 5b1afca..7c18975 100755
--- a/build_system.d
+++ b/build_system.d
@@ -32,6 +32,8 @@ const LOG_DIR = "./log";
 const API_LOG = LOG_DIR ~ "/api_build.txt";
 const APP_LOG = LOG_DIR ~ "/app_build.txt";
 
+const GITHUB_PROPS_FILE = "github_token.properties";
+
 int main(string[] args) {
     string ver = getVersion();
     if (ver is null) {
@@ -135,7 +137,7 @@ void createRelease(string ver, string description) {
     data.object["generate_release_notes"] = JSONValue(false);
 
     auto rq = Request();
-    auto props = Properties("github_token.properties");
+    auto props = Properties(GITHUB_PROPS_FILE);
     string username = props["username"];
     string token = props["token"];
     rq.authenticator = new BasicAuthentication(username, token);
@@ -148,13 +150,21 @@ void createRelease(string ver, string description) {
         string responseBody = cast(string) response.responseBody;
         JSONValue responseData = parseJSON(responseBody);
         print("Created release %s", responseData["url"].str);
-        // Use the "upload-asset.sh" script to upload the asset, since internal requests api is broken.
-        string command = format!"./upload-asset.sh github_api_token=%s owner=andrewlalis repo=RailSignalAPI tag=v%s filename=%s"(
-            token,
-            ver,
-            "./target/rail-signal-" ~ ver ~ ".jar"
+        long releaseId = responseData["id"].integer;
+        string uploadUrl = format!"https://uploads.github.com/repos/andrewlalis/RailSignalAPI/releases/%d/assets?name=%s"(
+            releaseId,
+            "rail-signal-" ~ ver ~ ".jar"
         );
-        runOrQuit(command);
+        print("Uploading JAR file to %s", uploadUrl);
+        auto f = File("./target/rail-signal-" ~ ver ~ ".jar", "rb");
+        ulong assetSize = f.size();
+        rq.addHeaders(["Content-Length": format!"%d"(assetSize)]);
+        auto assetResponse = rq.post(uploadUrl, f.byChunk(4096));
+        if (assetResponse.code == 201) {
+            print("JAR file uploaded successfully.");
+        } else {
+            error("An error occurred while uploading the JAR file.");
+        }
     } else {
         error("An error occurred while creating the release.");
         writeln(response.responseBody);
diff --git a/pom.xml b/pom.xml
index 58d76f3..3810cf2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
 	</parent>
 	<groupId>nl.andrewl</groupId>
 	<artifactId>rail-signal-api</artifactId>
-	<version>2.2.1</version>
+	<version>2.3.0</version>
 	<name>rail-signal-api</name>
 	<description>A simple API for tracking rail traffic in signalled blocks.</description>
 	<properties>
diff --git a/quasar-app/src/map/mapEventListener.js b/quasar-app/src/map/mapEventListener.js
index 25098d0..41be1d6 100644
--- a/quasar-app/src/map/mapEventListener.js
+++ b/quasar-app/src/map/mapEventListener.js
@@ -14,6 +14,9 @@ const HOVER_RADIUS = 10;
 
 export let LAST_MOUSE_POINT = null;
 
+const SELECTION_MODE_NORMAL = 1;
+const SELECTION_MODE_CHOOSE = 2;
+let selectionMode = SELECTION_MODE_NORMAL;
 const componentSelectionListeners = new Map();
 
 /**
@@ -72,8 +75,18 @@ function onMouseDown(event) {
  * @param {MouseEvent} event
  */
 function onMouseUp(event) {
-  const finishingDrag = camPanNonzero();
+  if (selectionMode === SELECTION_MODE_NORMAL) {
+    handleNormalSelectionMouseUp(event);
+  }
   camPanFinish();
+}
+
+/**
+ * Handles the mouse up event in normal selection mode. This means changing the
+ * set of selected components.
+ * @param {MouseEvent} event
+ */
+function handleNormalSelectionMouseUp(event) {
   if (MAP_COMPONENTS_HOVERED.length > 0) {
     if (!event.shiftKey) {// If the user isn't holding SHIFT, clear the set of selected components first.
       MAP_RAIL_SYSTEM.selectedComponents.length = 0;
@@ -89,7 +102,7 @@ function onMouseUp(event) {
       }
     }
     componentSelectionListeners.forEach(callback => callback(MAP_RAIL_SYSTEM.selectedComponents));
-  } else if (!finishingDrag) {
+  } else if (!camPanNonzero()) {
     MAP_RAIL_SYSTEM.selectedComponents.length = 0;
   }
 }