TimeSeriesInterp:  don't re-compute noop threshold in eval
TimeSeriesInterp.c:  aesthetics
TimeSeriesInterp:  improve kernel numerical stab. at small res.

also, this is an infinitesimal performance improvement
TimeSeriesInterp:  use lround() instead of round()

I assume using the correct function is faster or better or something.
Window.c:  fix failure to initialize all of Lanczos window
Window.c:  add Lanczos window to "Named" interface
Window:  add Lanczos window to unit tests
test of array to null pointer is always false