0.9.0 release notes [skip ci] (#2627)

May 2019 release (0.9.0), includes:
* Bigtable v0.9.0
* GCS v1.0.0
* Common v0.7.0

Author: mr-salty

google/cloud/README.md

@@ -22,11 +22,16 @@ is available [online][doxygen-link].
 
 ## Release Notes
 
-### v0.7.x - TBD
+### v0.8.x - TBD
+
+### v0.7.x - 2019-05
+
+* Support move-only callables in `future<T>`
+* Avoid `std::make_exception_ptr()` in `future_shared_state_base::abandon()`.
 
 ### v0.6.x - 2019-04
 
-* Avoid std::make_exception_ptr() when building without exceptions.
+* Avoid `std::make_exception_ptr()` when building without exceptions.
 * Removed the googleapis submodule. The build system now automatically
   downloads all deps.
 

google/cloud/bigtable/README.md

@@ -42,7 +42,27 @@ Apache 2.0; see [`LICENSE`](../../../LICENSE) for details.
 
 ## Release Notes
 
-### v0.9.x - TBD
+### v0.10.x - TBD
+
+### v0.9.x - 2019-05
+
+* **Breaking Changes**
+  * Return `google::cloud::future` from `InstanceAdmin` functions: this is
+    more consistent with all other functions returning futures.
+  * Remove unused `bigtable::GrpcError`: the library no longer raises this
+    exception, any code trying to catch the exception should be modified to
+    handle errors via `StatusOr<T>`.
+  * Remove Snapshot-related functions, tests, examples, etc.: this is
+    whitelisted functionality in Cloud Bigtable and it is no longer expected
+    to reach GA.
+* Continue to implement more async APIs (`Async*()` methods) for the
+  `InstanceAdmin`, `TableAdmin`, and `Table` classes
+  (**Note: These are not yet stable**)
+* Bugfixes:
+  * Need `ignore_warnings` to actually delete an AppProfile.
+  * Fix portability/logical errors in shell scripts.
+  * Fix a race condition in `MutationBatcher`.
+* Implemented a number of previously missing code samples.
 
 ### v0.8.x - 2019-04
 

google/cloud/storage/README.md

@@ -44,7 +44,9 @@ Apache 2.0; see [`LICENSE`](../../../LICENSE) for details.
 
 ## Release Notes
 
-### v1.0.0 - TBD
+### v1.1.x - TBD
+
+### v1.0.x - 2019-05
 
 * Declared GA and updated major number.
 * Support signed policy documents.