Revise changelog

Author: japgolly

doc/changelog/1.4.0.md

@@ -1,5 +1,12 @@
 ## 1.4.0
 
+* React 16.6 & 16.7 support
+  * Added `React.Suspense`.
+    For technical reasons (types, power, constraints) `React.lazy` is not added nor needed in Scala;
+    use the new `AsyncCallback` instead.
+  * The new `getDerivedStateFromError` has *not* been implemented, and cannot be until facebook/react#13986 is merged.
+  * Add `React.memo` to add reusability to "functional" components
+
 * VDOM modernisation
 
   React's VDOM capabilities increased drastically over a year ago in the upgrade from React 15 to 16.
@@ -15,7 +22,7 @@
   * To compose two `TagMod`s, use `TagMod(a, b)` instead of `a(b)`
   * To compose `VdomNode`s, either use `React.Fragment(a, b)` to result in something immediately renderable, or `TagMod(a, b)` if you plan to apply it to a tag.
   * VDOM tags now extends `VdomElement` directly - no need to coerce or call `.render` when caching
-  * Tag building now 30% faster (but we're talking microseconds so negligible so why am I writing this in to the changelog?... life's a mystery)
+  * Tag building now 30% faster (but we're talking microseconds so it's negligible so why am I writing this in to the changelog?... life's a mystery)
   * Fix subtle bug/puzzler where you could think you're modifying a tag but weren't --
     the confusing behaviour responsible will now no longer compile. ([#508](https://github.com/japgolly/scalajs-react/issues/508))
   * Collections get new implicit methods `mkReactFragment` and `toReactFragment` (similar to existing `mkTagMod` and `toTagMod`)
@@ -29,17 +36,6 @@
   it can even be composed to run sequentially or concurrently. In fact you can see an example
   of running a bunch of AJAX calls in parallel [here in this new demo](https://japgolly.github.io/scalajs-react/#examples/ajax-2).
 
-* React 16.6 & 16.7 support
-  * Added `React.Suspense`.
-    For technical reasons (types, power, constraints) `React.lazy` is not added nor needed in Scala;
-    use the new `AsyncCallback` instead.
-  * The new `getDerivedStateFromError` has *not* been implemented, and cannot be until facebook/react#13986 is merged.
-  * Add `React.memo` to add reusability to "functional" components
-
-* `Reusability` & `Reusable` have been moved from the `extra` module, into `core`.
-  1. It was required to implement the new `React.memo`
-  2. It's necessary for using core React feature `shouldComponentUpdate` reasonably 
-
 * `Callback` changes
   * `.attemptTry` now catches all types of exception
   * Add `.memo` which memoises the result
@@ -56,9 +52,15 @@
   * `def validateStatusIs          (Int)                      (AjaxException => Callback): Ajax`
   * `def validateStatusIsSuccessful                           (AjaxException => Callback): Ajax`
 
-* Removed methods deprecated < 1.2.0
+* `Reusability` & `Reusable` have been moved from the `extra` module, into `core`.
+  1. It was required to implement the new `React.memo`
+  2. It's necessary for using core React feature `shouldComponentUpdate` reasonably
 
-* Add `.mapRaw(Raw => Raw)` to components
+* Add `ReactDOM.hydrate`
+
+* Add to components: `.mapRaw(Raw => Raw)`
+
+* Removed methods deprecated < 1.2.0
 
 * Dependency upgrades:
   * Cats 1.5.0
@@ -68,7 +70,9 @@
 
 # Migration
 
-* `Reusability` & `Reusable` have been moved from package `japgolly.scalajs.react.extra` to `japgolly.scalajs.react`. 
+* If you added `import japgolly.scalajs.react.vdom.Implicits._` or similar to use components in certain contexts
+  (eg. router config) you can delete now. No replacement needed.
+* `Reusability` & `Reusable` have been moved from package `japgolly.scalajs.react.extra` to `japgolly.scalajs.react`
 
 ```
 find . -type f -name '*.scala' -exec perl -pi -e '
@@ -84,8 +88,3 @@ find . -type f -name '*.scala' -exec perl -pi -e '
 
 ' {} +
 ```
-
-
-# TODO
-
-* Rename `.runNow()` to `.unsafeRunNow()`?