* Remove "simple" flow estimation from help (because it was disabled by 653bca8b)
* Add `flush` after printing iteration number for better UX

OpenCV 3.3.0

OpenCV 3.3.0

OpenCV 3.3.0 for Intel Computer Vision SDK

- boundary checks
- div by zero guard
- fixed bilinear interpolation (another case)
- reduce memory allocation

- OpenCL kernels don't handle matrices properly. Assumptions are not checked.
- OpenCL/T-API integration is not correct.

- integer division => divUp()
- cast to 'int' => cvCeil()

cmake: fix __STDC macros for opencv_world build