First Bugfix Release for v3.3

v3.3.1

The source code with submodules can be downloaded directly from the following link:
http://arrayfire.com/arrayfire_source/arrayfire-full-3.3.1.tar.bz2

Bug Fixes

• Fixes to \ref af::array::device()
  • CPU Backend: evaluate arrays
    before returning pointer with asynchronous calls in CPU backend.
  • OpenCL Backend: fix segfaults
    when requested for device pointers on empty arrays.
• Fixed \ref af::array::operator%() from using rem to mod.
• Fixed array destruction
  when backends are switched in Unified API.
• Fixed indexing after
  \ref af::moddims() is called.
• Fixes FFT calls for CUDA and OpenCL backends when used on
  multiple devices.
• Fixed unresolved external
  for some functions from \ref af::array::array_proxy class.

Build

• CMake compiles files in alphabetical order.
• CMake fixes for BLAS and LAPACK on some Linux distributions.

Improvements

• Fixed OpenCL FFT performance regression.
• \ref af::array::device() on OpenCL backend returns
  cl_mem instead of (void*)cl::Buffer*.
• In Unified backend, load versioned libraries
  at runtime.

Documentation

• Reorganized, cleaner README file.
• Replaced non-free lena image in assets with free-to-distribute lena image.