Improved error handling for Android and iOS. (flutter#775)

Updated FireAuth docs.
Updated deprecated API "fetchProvidersForEmail" to "fetchSignInMethodsForEmail".
Added "unlinkCredential".
Updated changelog and brought wrapper inline with (flutter#915).

Author: slightfoot

packages/firebase_auth/CHANGELOG.md

@@ -1,3 +1,13 @@
+## 0.6.7
+
+* `FirebaseAuth` and `FirebaseUser` are now fully documented.
+* `PlatformExceptions` now report error codes as stated in docs.
+* Credentials can now be unlinked from Accounts with new methods on `FirebaseUser`.
+
+## 0.6.6
+
+* Users can now reauthenticate in response to operations that require a recent sign-in.
+
 ## 0.6.5
 
 * Fixing async method `verifyPhoneNumber`, that would never return even in a successful call.

packages/firebase_auth/android/build.gradle

@@ -32,6 +32,6 @@ android {
         disable 'InvalidPackage'
     }
     dependencies {
-        api 'com.google.firebase:firebase-auth:16.0.4'
+        api 'com.google.firebase:firebase-auth:16.0.5'
     }
 }

packages/firebase_auth/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip