diff --git a/0.bootstrap.js b/0.bootstrap.js
index 8cf4e54..530ed06 100644
--- a/0.bootstrap.js
+++ b/0.bootstrap.js
@@ -4,11 +4,11 @@
 /*!*******************************!*\
   !*** ../pkg/gpx_web_utils.js ***!
   \*******************************/
-/*! exports provided: greet, __wbg_alert_4ad63c9979edd105 */
+/*! exports provided: greet, __wbg_alert_4ad63c9979edd105, __wbg_new_59cb74e423758ede, __wbg_stack_558ba5917b466edd, __wbg_error_4bb6c2a97407129a, __wbindgen_object_drop_ref */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
-eval("__webpack_require__.r(__webpack_exports__);\n/* harmony import */ var _gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./gpx_web_utils_bg.wasm */ \"../pkg/gpx_web_utils_bg.wasm\");\n/* harmony import */ var _gpx_web_utils_bg_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./gpx_web_utils_bg.js */ \"../pkg/gpx_web_utils_bg.js\");\n/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, \"greet\", function() { return _gpx_web_utils_bg_js__WEBPACK_IMPORTED_MODULE_1__[\"greet\"]; });\n\n/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, \"__wbg_alert_4ad63c9979edd105\", function() { return _gpx_web_utils_bg_js__WEBPACK_IMPORTED_MODULE_1__[\"__wbg_alert_4ad63c9979edd105\"]; });\n\n\n\n\n//# sourceURL=webpack:///../pkg/gpx_web_utils.js?");
+eval("__webpack_require__.r(__webpack_exports__);\n/* harmony import */ var _gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./gpx_web_utils_bg.wasm */ \"../pkg/gpx_web_utils_bg.wasm\");\n/* harmony import */ var _gpx_web_utils_bg_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./gpx_web_utils_bg.js */ \"../pkg/gpx_web_utils_bg.js\");\n/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, \"greet\", function() { return _gpx_web_utils_bg_js__WEBPACK_IMPORTED_MODULE_1__[\"greet\"]; });\n\n/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, \"__wbg_alert_4ad63c9979edd105\", function() { return _gpx_web_utils_bg_js__WEBPACK_IMPORTED_MODULE_1__[\"__wbg_alert_4ad63c9979edd105\"]; });\n\n/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, \"__wbg_new_59cb74e423758ede\", function() { return _gpx_web_utils_bg_js__WEBPACK_IMPORTED_MODULE_1__[\"__wbg_new_59cb74e423758ede\"]; });\n\n/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, \"__wbg_stack_558ba5917b466edd\", function() { return _gpx_web_utils_bg_js__WEBPACK_IMPORTED_MODULE_1__[\"__wbg_stack_558ba5917b466edd\"]; });\n\n/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, \"__wbg_error_4bb6c2a97407129a\", function() { return _gpx_web_utils_bg_js__WEBPACK_IMPORTED_MODULE_1__[\"__wbg_error_4bb6c2a97407129a\"]; });\n\n/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, \"__wbindgen_object_drop_ref\", function() { return _gpx_web_utils_bg_js__WEBPACK_IMPORTED_MODULE_1__[\"__wbindgen_object_drop_ref\"]; });\n\n\n\n\n//# sourceURL=webpack:///../pkg/gpx_web_utils.js?");
 
 /***/ }),
 
@@ -16,11 +16,11 @@ eval("__webpack_require__.r(__webpack_exports__);\n/* harmony import */ var _gpx
 /*!**********************************!*\
   !*** ../pkg/gpx_web_utils_bg.js ***!
   \**********************************/
-/*! exports provided: greet, __wbg_alert_4ad63c9979edd105 */
+/*! exports provided: greet, __wbg_alert_4ad63c9979edd105, __wbg_new_59cb74e423758ede, __wbg_stack_558ba5917b466edd, __wbg_error_4bb6c2a97407129a, __wbindgen_object_drop_ref */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
-eval("__webpack_require__.r(__webpack_exports__);\n/* WEBPACK VAR INJECTION */(function(module) {/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"greet\", function() { return greet; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"__wbg_alert_4ad63c9979edd105\", function() { return __wbg_alert_4ad63c9979edd105; });\n/* harmony import */ var _gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./gpx_web_utils_bg.wasm */ \"../pkg/gpx_web_utils_bg.wasm\");\n\n\nconst lTextDecoder = typeof TextDecoder === 'undefined' ? (0, module.require)('util').TextDecoder : TextDecoder;\n\nlet cachedTextDecoder = new lTextDecoder('utf-8', { ignoreBOM: true, fatal: true });\n\ncachedTextDecoder.decode();\n\nlet cachegetUint8Memory0 = null;\nfunction getUint8Memory0() {\n    if (cachegetUint8Memory0 === null || cachegetUint8Memory0.buffer !== _gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__[\"memory\"].buffer) {\n        cachegetUint8Memory0 = new Uint8Array(_gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__[\"memory\"].buffer);\n    }\n    return cachegetUint8Memory0;\n}\n\nfunction getStringFromWasm0(ptr, len) {\n    return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));\n}\n/**\n*/\nfunction greet() {\n    _gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__[\"greet\"]();\n}\n\nconst __wbg_alert_4ad63c9979edd105 = function(arg0, arg1) {\n    alert(getStringFromWasm0(arg0, arg1));\n};\n\n\n/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../www/node_modules/webpack/buildin/harmony-module.js */ \"./node_modules/webpack/buildin/harmony-module.js\")(module)))\n\n//# sourceURL=webpack:///../pkg/gpx_web_utils_bg.js?");
+eval("__webpack_require__.r(__webpack_exports__);\n/* WEBPACK VAR INJECTION */(function(module) {/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"greet\", function() { return greet; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"__wbg_alert_4ad63c9979edd105\", function() { return __wbg_alert_4ad63c9979edd105; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"__wbg_new_59cb74e423758ede\", function() { return __wbg_new_59cb74e423758ede; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"__wbg_stack_558ba5917b466edd\", function() { return __wbg_stack_558ba5917b466edd; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"__wbg_error_4bb6c2a97407129a\", function() { return __wbg_error_4bb6c2a97407129a; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"__wbindgen_object_drop_ref\", function() { return __wbindgen_object_drop_ref; });\n/* harmony import */ var _gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./gpx_web_utils_bg.wasm */ \"../pkg/gpx_web_utils_bg.wasm\");\n\n\nconst heap = new Array(32).fill(undefined);\n\nheap.push(undefined, null, true, false);\n\nfunction getObject(idx) { return heap[idx]; }\n\nlet heap_next = heap.length;\n\nfunction dropObject(idx) {\n    if (idx < 36) return;\n    heap[idx] = heap_next;\n    heap_next = idx;\n}\n\nfunction takeObject(idx) {\n    const ret = getObject(idx);\n    dropObject(idx);\n    return ret;\n}\n\nconst lTextDecoder = typeof TextDecoder === 'undefined' ? (0, module.require)('util').TextDecoder : TextDecoder;\n\nlet cachedTextDecoder = new lTextDecoder('utf-8', { ignoreBOM: true, fatal: true });\n\ncachedTextDecoder.decode();\n\nlet cachegetUint8Memory0 = null;\nfunction getUint8Memory0() {\n    if (cachegetUint8Memory0 === null || cachegetUint8Memory0.buffer !== _gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__[\"memory\"].buffer) {\n        cachegetUint8Memory0 = new Uint8Array(_gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__[\"memory\"].buffer);\n    }\n    return cachegetUint8Memory0;\n}\n\nfunction getStringFromWasm0(ptr, len) {\n    return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));\n}\n/**\n*/\nfunction greet() {\n    _gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__[\"greet\"]();\n}\n\nfunction addHeapObject(obj) {\n    if (heap_next === heap.length) heap.push(heap.length + 1);\n    const idx = heap_next;\n    heap_next = heap[idx];\n\n    heap[idx] = obj;\n    return idx;\n}\n\nlet WASM_VECTOR_LEN = 0;\n\nconst lTextEncoder = typeof TextEncoder === 'undefined' ? (0, module.require)('util').TextEncoder : TextEncoder;\n\nlet cachedTextEncoder = new lTextEncoder('utf-8');\n\nconst encodeString = (typeof cachedTextEncoder.encodeInto === 'function'\n    ? function (arg, view) {\n    return cachedTextEncoder.encodeInto(arg, view);\n}\n    : function (arg, view) {\n    const buf = cachedTextEncoder.encode(arg);\n    view.set(buf);\n    return {\n        read: arg.length,\n        written: buf.length\n    };\n});\n\nfunction passStringToWasm0(arg, malloc, realloc) {\n\n    if (realloc === undefined) {\n        const buf = cachedTextEncoder.encode(arg);\n        const ptr = malloc(buf.length);\n        getUint8Memory0().subarray(ptr, ptr + buf.length).set(buf);\n        WASM_VECTOR_LEN = buf.length;\n        return ptr;\n    }\n\n    let len = arg.length;\n    let ptr = malloc(len);\n\n    const mem = getUint8Memory0();\n\n    let offset = 0;\n\n    for (; offset < len; offset++) {\n        const code = arg.charCodeAt(offset);\n        if (code > 0x7F) break;\n        mem[ptr + offset] = code;\n    }\n\n    if (offset !== len) {\n        if (offset !== 0) {\n            arg = arg.slice(offset);\n        }\n        ptr = realloc(ptr, len, len = offset + arg.length * 3);\n        const view = getUint8Memory0().subarray(ptr + offset, ptr + len);\n        const ret = encodeString(arg, view);\n\n        offset += ret.written;\n    }\n\n    WASM_VECTOR_LEN = offset;\n    return ptr;\n}\n\nlet cachegetInt32Memory0 = null;\nfunction getInt32Memory0() {\n    if (cachegetInt32Memory0 === null || cachegetInt32Memory0.buffer !== _gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__[\"memory\"].buffer) {\n        cachegetInt32Memory0 = new Int32Array(_gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__[\"memory\"].buffer);\n    }\n    return cachegetInt32Memory0;\n}\n\nconst __wbg_alert_4ad63c9979edd105 = function(arg0, arg1) {\n    alert(getStringFromWasm0(arg0, arg1));\n};\n\nconst __wbg_new_59cb74e423758ede = function() {\n    var ret = new Error();\n    return addHeapObject(ret);\n};\n\nconst __wbg_stack_558ba5917b466edd = function(arg0, arg1) {\n    var ret = getObject(arg1).stack;\n    var ptr0 = passStringToWasm0(ret, _gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__[\"__wbindgen_malloc\"], _gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__[\"__wbindgen_realloc\"]);\n    var len0 = WASM_VECTOR_LEN;\n    getInt32Memory0()[arg0 / 4 + 1] = len0;\n    getInt32Memory0()[arg0 / 4 + 0] = ptr0;\n};\n\nconst __wbg_error_4bb6c2a97407129a = function(arg0, arg1) {\n    try {\n        console.error(getStringFromWasm0(arg0, arg1));\n    } finally {\n        _gpx_web_utils_bg_wasm__WEBPACK_IMPORTED_MODULE_0__[\"__wbindgen_free\"](arg0, arg1);\n    }\n};\n\nconst __wbindgen_object_drop_ref = function(arg0) {\n    takeObject(arg0);\n};\n\n\n/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../www/node_modules/webpack/buildin/harmony-module.js */ \"./node_modules/webpack/buildin/harmony-module.js\")(module)))\n\n//# sourceURL=webpack:///../pkg/gpx_web_utils_bg.js?");
 
 /***/ }),
 
@@ -28,7 +28,7 @@ eval("__webpack_require__.r(__webpack_exports__);\n/* WEBPACK VAR INJECTION */(f
 /*!************************************!*\
   !*** ../pkg/gpx_web_utils_bg.wasm ***!
   \************************************/
-/*! exports provided: memory, greet */
+/*! exports provided: memory, greet, __wbindgen_free, __wbindgen_malloc, __wbindgen_realloc */
 /***/ (function(module, exports, __webpack_require__) {
 
 eval("\"use strict\";\n// Instantiate WebAssembly module\nvar wasmExports = __webpack_require__.w[module.i];\n__webpack_require__.r(exports);\n// export exports from WebAssembly module\nfor(var name in wasmExports) if(name != \"__webpack_init__\") exports[name] = wasmExports[name];\n// exec imports from WebAssembly module (for esm order)\n/* harmony import */ var m0 = __webpack_require__(/*! ./gpx_web_utils_bg.js */ \"../pkg/gpx_web_utils_bg.js\");\n\n\n// exec wasm module\nwasmExports[\"__webpack_init__\"]()\n\n//# sourceURL=webpack:///../pkg/gpx_web_utils_bg.wasm?");
diff --git a/2e9be17d99a523dc8ae9.module.wasm b/2e9be17d99a523dc8ae9.module.wasm
deleted file mode 100644
index 088d57a..0000000
Binary files a/2e9be17d99a523dc8ae9.module.wasm and /dev/null differ
diff --git a/46d4844c9de40702e69e.module.wasm b/46d4844c9de40702e69e.module.wasm
new file mode 100644
index 0000000..b0a4aa5
Binary files /dev/null and b/46d4844c9de40702e69e.module.wasm differ
diff --git a/bootstrap.js b/bootstrap.js
index c1feb3f..76bfef1 100644
--- a/bootstrap.js
+++ b/bootstrap.js
@@ -57,6 +57,18 @@
 /******/ 				"./gpx_web_utils_bg.js": {
 /******/ 					"__wbg_alert_4ad63c9979edd105": function(p0i32,p1i32) {
 /******/ 						return installedModules["../pkg/gpx_web_utils_bg.js"].exports["__wbg_alert_4ad63c9979edd105"](p0i32,p1i32);
+/******/ 					},
+/******/ 					"__wbg_new_59cb74e423758ede": function() {
+/******/ 						return installedModules["../pkg/gpx_web_utils_bg.js"].exports["__wbg_new_59cb74e423758ede"]();
+/******/ 					},
+/******/ 					"__wbg_stack_558ba5917b466edd": function(p0i32,p1i32) {
+/******/ 						return installedModules["../pkg/gpx_web_utils_bg.js"].exports["__wbg_stack_558ba5917b466edd"](p0i32,p1i32);
+/******/ 					},
+/******/ 					"__wbg_error_4bb6c2a97407129a": function(p0i32,p1i32) {
+/******/ 						return installedModules["../pkg/gpx_web_utils_bg.js"].exports["__wbg_error_4bb6c2a97407129a"](p0i32,p1i32);
+/******/ 					},
+/******/ 					"__wbindgen_object_drop_ref": function(p0i32) {
+/******/ 						return installedModules["../pkg/gpx_web_utils_bg.js"].exports["__wbindgen_object_drop_ref"](p0i32);
 /******/ 					}
 /******/ 				}
 /******/ 			};
@@ -159,7 +171,7 @@
 /******/ 				promises.push(installedWasmModuleData);
 /******/ 			else {
 /******/ 				var importObject = wasmImportObjects[wasmModuleId]();
-/******/ 				var req = fetch(__webpack_require__.p + "" + {"../pkg/gpx_web_utils_bg.wasm":"2e9be17d99a523dc8ae9"}[wasmModuleId] + ".module.wasm");
+/******/ 				var req = fetch(__webpack_require__.p + "" + {"../pkg/gpx_web_utils_bg.wasm":"46d4844c9de40702e69e"}[wasmModuleId] + ".module.wasm");
 /******/ 				var promise;
 /******/ 				if(importObject instanceof Promise && typeof WebAssembly.compileStreaming === 'function') {
 /******/ 					promise = Promise.all([WebAssembly.compileStreaming(req), importObject]).then(function(items) {