Update ChangeLog for 4.3.1.
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https://github.com/jemalloc/jemalloc
+* 4.3.1 (November 7, 2016)
+
+ Bug fixes:
+ - Fix a severe virtual memory leak. This regression was first released in
+ 4.3.0. (@interwq, @jasone)
+ - Refactor atomic and prng APIs to restore support for 32-bit platforms that
+ use pre-C11 toolchains, e.g. FreeBSD's mips. (@jasone)
+
* 4.3.0 (November 4, 2016)
This is the first release that passes the test suite for multiple Windows
