Provides methods to test whether time series is consistent
with white noise. Two new tests based on Haar wavelets and general
wavelets described by Nason and Savchev (2014)
<doi:10.1002/sta4.69> are provided and, for comparison purposes
this package also implements the
B test of Bartlett (1967) <doi:10.2307/2333850>. Functionality
is provided to compute an approximation to the theoretical
power of the general wavelet test in the case of general
ARMA alternatives.