Remove accidentally-committed debugging raise statement in pyopencl.cache (Closes #12)

Closes #12

See merge request !69

Allow setup_requires numpy, use pybind11 setup widgetry from aksetup

See merge request !67

Minor fixes to scan

See merge request !66

Fix quoting

See merge request inducer/pyopencl!65

ListOfListsBuilder: Add back support for MemoryObject arguments

See merge request !63

Add CL_CALLBACK to event callback (#260 on github)

See merge request inducer/pyopencl!64

Make particle example work without PyOpenGL_accelerate

vbo.buffer nor vbo.buffers aren't normally used by external code
The normal way to get the ID of the VBO is int(vbo)
See https://github.com/inducer/pyopencl/issues/196

Merge branch 'listoflistsbuilder-add-back-memoryobject-support' of gitlab.tiker.net:inducer/pyopencl into listoflistsbuilder-add-back-memoryobject-support

ListOfListsBuilder: Support user-supplied VectorArgs with offsets.

See merge request inducer/pyopencl!62

Merge branch 'listoflistsbuilder-vectorarg-with-offset' of gitlab.tiker.net:inducer/pyopencl into listoflistsbuilder-vectorarg-with-offset

Rect buffer transfers default arguments fix

See merge request inducer/pyopencl!61

change default arguments for host/buffer_pitches of rectangular buffer transfers to empty tuple instead of None

Add license headers to C++ files

See merge request inducer/pyopencl!60