v0.3.7

[lukelowry]

Changed

• Convolve and DyConvolve can take a scalar argument for scales, and will return transformed signal instead of list in that case.
• Convolve and DyConvolve can also take a 1D signal and will return a transformed 1D signal in that case
• impulse function now 1D by default
• Misc examples updated to show this feature
• Broke up benchmark into four separate performance tests

Added

• Improved Chebyshev approximator