te once, value 0 at 0.
    array([1. , 0.5, 0.5, 0.5])
    >>> hermint([1,2,3], m=2) # integrate twice, value & deriv 0 at 0
    array([-0.5       ,  0.5       ,  0.125     ,  0.08333333,  0.0625    ]) # may vary
    >>> hermint([1,2,3], k=1) # integrate once, value 1 at 0.
    array([2. , 0.5, 0.5, 0.5])
    >>> hermint([1,2,3], lbnd=-1) # integrate once, value 0 at -1
    array([-2. ,  0.5,  0.5,  0.5])
    >>> hermint([1,2,3], m=2, k=[1,2], lbnd=-1)
    array([ 1.66666667, -0.5       ,  0.125     ,  0.08333333,  0.0625    ]) # may vary

    r