Fix default parameter of sh.ls()
Merge branch 'refs/heads/C-buffers'
Test using ISPC for SIMD code generation
Add missing ISPC function
Abstract usage of GLSL shaders
Cleanup
Fast SIMD median implementation using ISPC
Cleanup
Fix dir/file swapped on windows
ISPC functionality on windows, dependent on the ISPC executable and ld from GCC
Fix image zoom
Merge branch 'refs/heads/master' into C-buffers
Initial support for compiled SIMD operations on buffers