Siying Dong 9afa20cf2f Increase build version and HISTORY.md for releasing 5.2 ...

Summary:
Also clean up HISTORY.md a little bit.
Closes https://github.com/facebook/rocksdb/pull/1854

Differential Revision: D4539556

Pulled By: siying

fbshipit-source-id: 567391e

2017-02-10 12:09:15 -08:00

..

rocksdb

Increase build version and HISTORY.md for releasing 5.2

2017-02-10 12:09:15 -08:00