v4.0.1

Polynomials v4.0.1

Diff since v4.0.0

Closed issues:

• bad type inference for composition of ImmutablePolynomials (#512)
• polynomials should have big methods? (#522)

Merged pull requests:

• Point LICENSE to current contributors list (#521) (@vtjnash)
• fix some stray untyped global variables (#523) (@nsajko)
• don't use Val with ntuple when the length isn't a constant (#525) (@nsajko)
• no special case for coeffs (#528) (@jverzani)
• special case immutable poly powers (#529) (@jverzani)
• an algorithm for polynomial composition, an algorithm for FFT-based * (#530) (@jverzani)
• bump version (#531) (@jverzani)