• Switched to using Copybara for project synchronization.
• Minor cleanup in ports.
• Silence unused argument warnings in MSVC.
• Add tests for empty keys and values.
• Switch corruption_test to use InMemEnv.
• Replace AtomicPointer with std::atomic.
• Make InMemoryEnv more consistent with filesystem based Env's.
• Align windows_logger with posix_logger.
• Improve CI configuration and added AppVeyor (Windows CI) badge to README.
• Added native support for Windows.
• Make WriteBatch::ApproximateSize() const.
• Fix PosixWritableFile::Sync() on Apple systems.
• Fix fdatasync() feature detection in opensource build.
• C++11 cleanup for util/mutexlock.h.
• Rework threading in env_posix.cc.
• Remove InitOnce from the port API.
• Expose WriteBatch::Append().
• Fix documentation for log file growth.
• Add move constructor to Status.
• Replace port_posix with port_stdcxx.
• Reimplement ConsumeDecimalNumber.
• Document the building process.
• Replace NULL with nullptr in C++ files.
• Remove PLATFORM_IS_LITTLE_ENDIAN from port/posix.h.
• Add more thread safety annotations.
• Require C++11.
• Replace SIZE_MAX with std::numeric_limits.
• Add CMake build support.
• Enable thread safety annotations.
• leveldb::DestroyDB will now delete empty directories.
• Replace SSE-optimized CRC32C in POSIX port with external library.
• Fix file writing bug in CL 170738066.
• Fix use of uninitialized value in LRUHandle.
• Fix issue #474: a race between the f*_unlocked() STDIO calls in env_posix.cc and concurrent application calls to fflush(NULL).
• Use __APPLE__ instead of OS_MACOS. The former is compiler-provided.
• Report missing CURRENT manifest file as database corruption.
• LevelDB: Add WriteBatch::ApproximateSize().
• Other minor fixes, code cleanup, and documentation improvements.