Continuous Integration

[thewilsonator]

Now that we have stuff we can test, we should start testing.

Circle appears to have CUDA support for enterprise with nvidia-docker.

For OpenCL it is probably easiest to use a CPU: need to make sure to get one with drivers for OpenCL preferably recent versions. Though we will need to update derelict-cl and the dcompute OpenCL driver to take advantage of that.