Prepare release 0.7.0

Signed-off-by: Márton Braun <braunmarci@gmail.com>

build.gradle

@@ -1,5 +1,5 @@
 buildscript {
-    ext.rainbowcake_version = '0.6.0'
+    ext.rainbowcake_version = '0.7.0'
 
     ext.kotlin_version = '1.3.72'
     ext.coroutines_version = '1.3.0'

releases/0.7.0.md

@@ -0,0 +1,27 @@
+# *0.7.0*
+
+Fifteenth release of RainbowCake.
+
+## What's new:
+
+### AndroidX migration
+
+RainbowCake has been migrated to AndroidX dependencies instead of the support libraries, and no longer supports projects built on the support library. A year and a half after release of AndroidX, this seemed like a reasonable time to make the jump.
+
+### `JobViewModel` deprecation
+
+The `JobViewModel` class that provides the coroutine integration of the framework (via `execute`) is now deprecated, and will be removed in a couple releases. Its functionality has been pulled up into the `RainbowCakeViewModel` base class, which now handles view state, events, and coroutine support. Having just one ViewModel base class in the framework should make things less confusing.
+
+Please replace any usages of `JobViewModel` with `RainbowCakeViewModel` (you get IDE support for this, so it should be trivial).
+
+### Channel module deprecation
+
+The `rainbow-cake-channels` module has been deprecated, and will be removed in an upcoming release entirely. Coroutine Flows should replace most usages of channels at this point. 
+
+### Small stuff
+
+- Some method visibilities have been restricted in `RainbowCakeFragment`. These method should not be called anywhere outside of descendants of the `Fragment`.
+- The `observeStateAndEvents` testing function now has a variant that can observe queued events, in addition to view state and events.
+- The `requireArguments` method is now deprecated, as the AndroidX `Fragment` class includes the method, making the extension unnecessary.
+- Added some new unit tests for `SingleShotLiveData`.
+- Small project configuration updates, dependency version bumps, etc.