Kernel in database for X6 integrated streams

[dieris]

Currently, the way to set a kernel in the bbndb branch is manually and through a file:

cl['X6'].ch('integrated-1-1').kernel = np.loadtxt(os.path.join(config.KernelDir, 'q1-ss_kernel.txt'), dtype=complex, converters={0: lambda s: complex(s.decode().replace('+-', '-'))})

We would like instead to save the kernel to database when running a SingleShotFidelityExperiment (that would require auspex/bbndb finding its way from the SingleShotMeasurement filter (or FidelityKernel node in the pipeline) to the appropriate integrated ReceiverChannel.

[grahamrow]

Hmm, maybe let's defer this until we come up with the intended usage pattern for stream selectors?

[gribeill]

BBN-Q/bbndb#16 lets the user load a kernel from a file to a stream selector, which resolves this a little.