website_scraping began watching jsoishi/fourier_tools
003e419 - bug fixes; have fourier helicity spectrum routine return energy too
8e3dc5c - made quiet by default
aa271db - a few bug fixes; added method to get helicity spectrum by the traditional fourier method.
425d198 - corrected wavenumber scale: internal wave numbers use k_ny as 1, not 2 pi/L. added many comments to clarify this and the somewhat counterintuitive fact that ...
15798ce - added page numbers for derivation
4e9e811 - corrected wavenumbers to be in proper code units instead of in terms of the nyquist wavenumber
ed8251c - fixed numpy naming convention for some reason
dd58c03 - added utility to calc helicity spectrum at all k