What's new:
-----------

- New API: clearenv.

What changed:
-------------

- SO_RCVTIMEO and SO_SNDTIMEO socket options are now honored.

- /proc/cpuinfo now reports L3 cache size on Intel CPUs.


Bug Fixes
---------

- Fix utils path handling in case cygdrive path is just '/'.
  Addresses: https://cygwin.com/ml/cygwin/2018-02/msg00174.html

- Fix a potential SIGFPE in strtod, if FE_INVALID exceptions are
  enabled.
  Addresses: https://cygwin.com/ml/cygwin/2018-04/msg00055.html

- Fix a CPU affinity problem when creating /proc/cpuinfo output.
  Addresses: https://cygwin.com/ml/cygwin/2018-04/msg00118.html

- Fix a buffer underrun problem in Win32 path normalization.
  Addresses: https://cygwin.com/ml/cygwin/2018-05//msg00017.html

- Fix a stack alignment problem which may lead to spurious crashes after
  fork.
  Addresses: https://cygwin.com/ml/cygwin-patches/2018-q2/msg00016.html

- Fix a g++ compilation problem with -std=c++14 or -std=c++17.
  Addresses: https://cygwin.com/ml/cygwin/2018-05/msg00316.html

- Fix FPE flag handling for division by zero conditions
  Addresses: https://cygwin.com/ml/cygwin/2018-06/msg00281.html