Add changelog breaking/notable changes+imgtable

Author: OttoWinter

esphomeyaml/changelog/v1.10.0.rst

@@ -7,6 +7,20 @@ Changelog - Version 1.9.0
     :author: Otto Winter
     :author_twitter: @OttoWinter_
 
+.. imgtable::
+
+    Native API, components/api, server-network.svg
+    Dashboard+Hass.io Add-On Updates, guides/getting_started_hassio, home-assistant.svg
+    Better Custom Components, components/sensor/custom, language-cpp.svg
+
+    APDS9960, components/sensor/apds9960, apds9960.jpg
+    MAX31855, components/sensor/max31855, max31855.jpg
+    ULN2003, components/stepper/index, stepper.svg
+
+    NeoPixelBus Light, components/light/neopixelbus, color_lens.svg
+    ESP32 Ethernet, components/ethernet, ethernet.svg
+    Home Assistant Sensor, components/sensor/homeassistant, home-assistant.svg
+
 Native API
 ----------
 
@@ -90,6 +104,44 @@ can use YAML for the boring boilerplate code but can completely customize everyt
 This migration is of course huge - almost every single file in the code+docs base has esphome{lib, yaml} somewhere
 in it, so it will take time until the next release for this to be finished.
 
+Breaking Changes
+----------------
+
+- Previously, esphomelib would by default only publish every 15th sensor value in order to provide averaged values.
+  However, that often confused users and I now decided to remove it **and** set the default update interval of
+  all components to ``60s`` instead of the previous ``15s``. You can get back the old behavior by setting
+
+  .. code-block:: yaml
+
+      sensor:
+        - platform: ...  # enter platform here
+          # other settings
+          update_interval: 15s
+          filters:
+            - sliding_window_moving_average:
+
+- The fastled effects have been renamed to ``addressable_`` for the new
+  :doc:`Neopixelbus </esphomeyaml/components/light/neopixelbus>` integration. See the validation error message
+  for more info.
+
+Other notable changes:
+----------------------
+
+- You can now configured multiple WiFi networks to connect to. The best one will be chosen automatically.
+  This is along with a *complete* rewrite of the WiFi component which now interacts directly with the ESP SDK.
+  (:ref:`wifi-networks`)
+- GPIO Switches have a new option ``restore_mode`` to configure how their values should be restored on boot.
+  (:doc:`/esphomeyaml/components/switch/gpio`)
+- Added :ref:`substitutions <config-substitutions>` to reduce repeating across configs.
+- Validation error messages are now displayed even better. Now all errors are shown with the exact context
+  where the error appeared. Try it, it's so much better. Next step will be to upgrade to a better YAML reader
+  to provide better error messages when the YAML syntax is invalid.
+- Added a bunch of guides (and helpers) for creating custom components. Also new: ``esphomeyaml.libraries``,
+  ``esphomeyaml.includes`` and ``esphomeyaml.platformio_options`` (:doc:`/esphomeyaml/components/esphomeyaml`)
+- Saved a lot of flash space on ESP8266 boards. Previously, platformio would allocate about 1/4 of flash for SPIFFS,
+  but esphomelib doesn't use that so now you have that as extra storage. Thanks `@brandond <http://github.com/brandond>`
+- You can now use Home Assistant to get time in ESPHome, so no more need for SNTP. See :ref:`time`.
+
 All changes
 -----------