v0.4.0

FourierTools v0.4.0

Diff since v0.3.7

Closed issues:

• Missing tests for czt (#9)
• Runtime dispatch with ft_fix_before (#29)

Merged pull requests:

• Fractiona fourier transform (#26) (@roflmaostc)
• Fourier join fix (#30) (@RainerHeintzmann)
• fixed a problem with czt which causes wrap-around. This had an effect… (#31) (@RainerHeintzmann)
• remove comment in test and changed czt input type requirement. (#32) (@RainerHeintzmann)