*: add release notes for 1.0 RC.1 (#192)

CHANGELOG.md

@@ -2,6 +2,29 @@
 
 All notable changes to this project will be documented in this file.
 
+## [1.0-rc.1] 2019-07-01
+
+- Remove the restriction of "the next shard DDL statement cannot be executed unless the current shard DDL operation is completely finished in shard merge scene for binlog replication" [#177](https://github.com/pingcap/dm/pull/177)
+- Support retry task on the `invalid connection` error for binlog replication [#66](https://github.com/pingcap/dm/pull/66)
+- Support generating `-schema-create.sql` files automatically for full migration [#186](https://github.com/pingcap/dm/pull/186)
+- Use [TiDB SQL Parser](https://github.com/pingcap/parser) to parse and restore DDL statements in binlog query events, and remove the `use db` statement when replicating to downstream [#54](https://github.com/pingcap/dm/pull/54)
+- Support migrating tables with generated column for full migration and binlog replication [#42](https://github.com/pingcap/dm/pull/42) [#60](https://github.com/pingcap/dm/pull/60)
+- Support appending the task name as a suffix to the dumped data directory (`dir` in the task configuration file) for full migration [#100](https://github.com/pingcap/dm/pull/100)
+- Support resuming tasks automatically after the DM-worker process restarted [#88](https://github.com/pingcap/dm/pull/88) [#116](https://github.com/pingcap/dm/pull/116)
+- Support skipping pre-check items when starting tasks [#65](https://github.com/pingcap/dm/pull/65)
+- Support case-insensitive in binlog event type of Binlog Event Filter rules [#188](https://github.com/pingcap/dm/pull/188)
+- Optimize relay log mechanism to improve compatibility with upstream MySQL/MariaDB [#92](https://github.com/pingcap/dm/pull/92) [#108](https://github.com/pingcap/dm/pull/108) [#117](https://github.com/pingcap/dm/pull/117) [#140](https://github.com/pingcap/dm/pull/140) [#171](https://github.com/pingcap/dm/pull/171)
+- Optimize RPC framework to limit the concurrency between DM-master and DM-worker [#157](https://github.com/pingcap/dm/pull/157)
+- Redirect the log of mydumper into the log of DM-worker [#93](https://github.com/pingcap/dm/pull/93)
+- Support using `--print-sample-config` command flag to show the sample config of DM-worker and DM-master [#28](https://github.com/pingcap/dm/pull/28)
+- Support showing the status of sharding DDL replication in the Grafana dashboard and optimize the dashboard [#96](https://github.com/pingcap/dm/pull/96) [#101](https://github.com/pingcap/dm/pull/101) [#120](https://github.com/pingcap/dm/pull/120)
+- Support setting the `max_allowed_packet` parameter for the database connection to the upstream and downstream [#99](https://github.com/pingcap/dm/pull/99) 
+- Support using `unsafe_cleanup` in DM Ansible to clean components of DM cluster [#128](https://github.com/pingcap/dm/pull/128)
+- Fix flushing checkpoint wrongly when existing multiple sharding groups [#124](https://github.com/pingcap/dm/pull/124)
+- Fix the wrong progress status when loading dumped files [#89](https://github.com/pingcap/dm/pull/89)
+- Greatly improve the test to ensure correctness
+- Fix many other bugs that don't affect correctness
+
 ## [1.0-alpha] 2019-01-18
 
 - Support the full data migration and the incremental data migration from MySQL/MariaDB into TiDB