Create CHANGELOG-1.0.md

CHANGELOG-1.0.md

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+See [code changes](https://github.com/opencurve/curve/compare/v0.1.4...release1.0).
+
+ ## The new features:
+- Support external ip for ChunkServer to divide inter-cluster communication and communication with clients.
+- The Curve_ops_tool supports printing space-info for each logical pool.
+- Add snapshot clone tool.
+- The curve-ansible adds deploy_monitor.yml.
+
+## optimization
+- Braft completely non-intrusive modifications.
+- Replace HMacSha256 implementation.
+
+## bug fix
+- Fixed the bug that chunkserver_deploy.sh not able to delete the previous fstab record when deploy one.
+- Fixed mds abort when exiting.
+- Fixed curvefs_tool (curve) missing support for password.
+- Fixed the bug that data from Etcd would not placed in LRU cache.
+- Fixed ChunkServer not aborting when read returns an internal error.