Update changelog.

CHANGELOG.md

@@ -42,6 +42,7 @@ You can find its changes [documented below](#060---2020-06-01).
 - WIDGET_PADDING items added to theme and `Flex::with_default_spacer`/`Flex::add_default_spacer` ([#1220] by [@cmyr])
 - CONFIGURE_WINDOW command to allow reconfiguration of an existing window. ([#1235] by [@rjwittams])
 - `RawLabel` widget displays text `Data`. ([#1252] by [@cmyr])
+- `WidgetPod::is_initialized` to check if a widget has received `WidgetAdded`. ([#1259] by [@finnerale])
 
 ### Changed
 
@@ -93,6 +94,7 @@ You can find its changes [documented below](#060---2020-06-01).
 - Multi-click on Windows, partial fix for #859 ([#1157] by [@raphlinus])
 - Windows: fix crash on resize from incompatible resources ([#1191 by [@raphlinus]])
 - GTK: Related dependencies are now optional, facilitating a pure X11 build. ([#1241] by [@finnerale])
+- Ensure that `LifeCycle::WidgetAdded` is the first thing a widget sees. ([#1259] by [@finnerale])
 
 ### Visual
 
@@ -111,6 +113,7 @@ You can find its changes [documented below](#060---2020-06-01).
 
 - Standardized web targeting terminology. ([#1013] by [@xStrom])
 - X11: Ported the X11 backend to [`x11rb`](https://github.com/psychon/x11rb). ([#1025] by [@jneem])
+- Add `debug_panic` macro for when a backtrace is useful but a panic unnecessary. ([#1259] by [@finnerale])
 
 ### Outside News
 
@@ -469,6 +472,7 @@ Last release without a changelog :(
 [#1245]: https://github.com/linebender/druid/pull/1245
 [#1251]: https://github.com/linebender/druid/pull/1251
 [#1252]: https://github.com/linebender/druid/pull/1252
+[#1259]: https://github.com/linebender/druid/pull/1258
 
 [Unreleased]: https://github.com/linebender/druid/compare/v0.6.0...master
 [0.6.0]: https://github.com/linebender/druid/compare/v0.5.0...v0.6.0