Updates Auth ChangeLog for the next release. (#216)

Also moves an unused public method into private header.

Author: XiangtianDai

Firebase/Auth/CHANGELOG.md

@@ -1,3 +1,6 @@
+# v4.1.1
+- Improves some method documentation in headers.
+
 # v4.1.0
 - Allows the app to handle continue URL natively, e.g., from password reset
   email.

Firebase/Auth/Source/FIRAuth_Internal.h

@@ -116,6 +116,18 @@ NS_ASSUME_NONNULL_BEGIN
  */
 - (BOOL)signOutByForceWithUserID:(NSString *)userID error:(NSError *_Nullable *_Nullable)error;
 
+/** @fn canHandleURL:
+    @brief Whether the specific URL is handled by @c FIRAuth .
+    @param url The URL received by the application delegate from any of the openURL method.
+    @return Whether or the URL is handled. YES means the URL is for Firebase Auth
+        so the caller should ignore the URL from further processing, and NO means the
+        the URL is for the app (or another libaray) so the caller should continue handling
+        this URL as usual.
+    @remarks If swizzling is disabled, URLs received by the application delegate must be forwarded
+        to this method for phone number auth to work.
+ */
+- (BOOL)canHandleURL:(nonnull NSURL *)url;
+
 @end
 
 NS_ASSUME_NONNULL_END

Firebase/Auth/Source/Public/FIRAuth.h

@@ -684,18 +684,6 @@ FIR_SWIFT_NAME(Auth)
 - (BOOL)canHandleNotification:(NSDictionary *)userInfo;
 #endif
 
-/** @fn canHandleURL:
-    @brief Whether the specific URL is handled by @c FIRAuth .
-    @param url The URL received by the application delegate from any of the openURL method.
-    @return Whether or the URL is handled. YES means the URL is for Firebase Auth
-        so the caller should ignore the URL from further processing, and NO means the
-        the URL is for the app (or another libaray) so the caller should continue handling
-        this URL as usual.
-    @remarks If swizzling is disabled, URLs received by the application delegate must be forwarded
-        to this method for phone number auth to work.
- */
-- (BOOL)canHandleURL:(nonnull NSURL *)url;
-
 @end
 
 NS_ASSUME_NONNULL_END