Plot a histogram with counts, binlims already given.

    Example
    =======
    >>> gaus = np.random.normal(size=100)
    >>> counts, binlims = np.histogram(gaus, bins='auto')
    >>> prebinned_hist(countsl binlims)

def prebinned_hist(counts, binlims, ax=None, *args, **kwargs):
    """Plot a histogram with counts, binlims already given.

    Example
    =======
    >>> gaus = np.random.normal(size=100)
    >>> counts, binlims = np.histogram(gaus, bins='auto')
    >>> prebinned_hist(countsl binlims)
    """
    ax = get_ax(ax)
    x = bincenters(binlims)
    weights = counts
    return ax.hist(x, bins=binlims, weights=weights, *args, **kwargs)