Subtracting two curves yields MethodError #2
Description
MethodError: -(::Curve{Float64}, ::Curve{Float64}) is ambiguous. Candidates:
-(c::NoisySignalIntegration.AbstractCurve, y) in ...
-(y, c::NoisySignalIntegration.AbstractCurve) in ...
Possible fix, define
-(::NoisySignalIntegration.AbstractCurve, ::NoisySignalIntegration.AbstractCurve)