Have anybody constructed an idiomatic D wrapper for FFTW?
http://www.fftw.org/fftw3_doc/Tutorial.html#Tutorial I'm specifically concerned about- `RefCounted`-wrapping of the C structures `fftw_complex` and `fftw_plan`
- range semantics, lazy evaluation and caching of result in stream-based architectures; `fftw_plan`, `fftw_execute` - slicing and scope- seamless interoperability with Mir (https://github.com/libmir/mir)
