Also testing Cython version of 1D.
Loadign abs from libc.
Creating convolve_1D array & MA on Cython.
Convert t to float64 to simplify the code.
Switcher for 1D arrays to use cython code.
Temporary solution for wmean_1D, redirect it.
Cosmetics, updating header.
Switching ndim=1 to cython version.

Note that the efficiency is quite the same of pure Python. I need to
  work here.
Merge branch '1Dinterp'

Conflicts:
	maud/maud.pyx