DEV: Changed __all__ def in mathops to list of strings.
DEV: Changed __all__ def in mathops to list of strings.

Per Tom and Eric's suggestion the arithmetic and logical operations
that are included in numpy are directly imported/included in this
library so that direct access is possible and the library is fully
functional. __all__ has been changed to a list of strings instead of
a list of the function objects themselves (per Tom's comment)

hainm/scikit-xray,tacaswell/scikit-beam,giltis/scikit-xray,hainm/scikit-xray,tacaswell/scikit-beam,scikit-xray/scikit-xray,scikit-xray/scikit-xray,ericdill/scikit-xray,tacaswell/scikit-xray,CJ-Wright/scikit-beam,yugangzhang/scikit-beam,ericdill/scikit-xray,yugangzhang/scikit-beam,Nikea/scikit-xray,licode/scikit-xray,Nikea/scikit-xray,licode/scikit-beam,tacaswell/scikit-beam,CJ-Wright/scikit-beam,licode/scikit-xray,tacaswell/scikit-xray,hainm/scikit-xray,danielballan/scikit-xray,licode/scikit-beam,celiafish/scikit-xray,giltis/scikit-xray,tacaswell/scikit-xray,yugangzhang/scikit-beam,scikit-xray/scikit-xray,danielballan/scikit-xray,celiafish/scikit-xray,licode/scikit-xray,Nikea/scikit-xray,danielballan/scikit-xray,celiafish/scikit-xray,giltis/scikit-xray,licode/scikit-beam,CJ-Wright/scikit-beam,ericdill/scikit-xray