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devsite/source/_changelogs/3.13.md

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+---
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+title: Pebble SDK 3.13 - Changelog
+date: 2016-06-07
+---
+
+This firmware was released only for the Pebble Time series.
+
+### Changes to Firmware
+
+* Added the Weather app (requires mobile app 3.13).
+* Reduced confusion between walking and sleeping in Pebble Health.
+* Added U+1F525 FIRE (🔥) to the supported emoji.
+* `layer_set_value()` functions now always mark the layer as dirty.
+* Removed complaints about sleeping less than usual if you none-the-less slept
+  plenty.
+* Improved Pebble Health summary notifications
+* ``gcolor_equal()`` now considers all transparent functions to be equivalent.
+  This change only affects apps built with SDK 3.13 or later.
+
+### Changes to SDK
+
+* [We launched Pebble Packages](/blog/2016/06/07/pebble-packages/), our new,
+  npm-based package solution!
+  * Check out our [Pebble Package guides](/guides/pebble-packages/)!
+  * **appinfo.json** is deprecated; long live **package.json**! Use
+    `pebble convert-project` to update your app.
+  * We now include Pebble Packages that you have installed in your
+    `node_modules` folder for use in the C or PebbleKit JS code of your app.
+  * We also include standard node modules for use in PebbleKit JS (but
+    compatibility varies).
+  * We can now create packages as a new project type. Try
+    `pebble new-package`!
+  * Packages can also use ``AppMessage`` and resources without identifier
+    conflicts.
+* `require` in PebbleKit JS now requires explicitly using relative paths when
+  loading files in your app (i.e. prefixing filenames with `./`).
+* ``AppMessage`` keys are now included in your C code with a `MESSAGE_KEY_`
+  prefix. They are also included in your PebbleKit JS code as the return value
+  of `require("message_keys")`.
+* ``AppMessage`` keys can be auto-assigned, so numbers don't have to be picked
+  explicitly for communication between C and PebbleKit JS. This is designed to
+  enable libraries to function without conflicts.