Added an early return fo overlap_1d to return zero if either of
the requested AM values are less than 0. This allows for a
simplification of kinetic_1d by removal of the individual
if-checks.
Placed the contents of the already defined normalize.m function
in the newley defined G3DNorm.m file.
Added CO test case for G09 with debug print for the 1e matricies.
Output from int_overlap() doesn't match. Checked basis set
definitions, and they're similar enough to yield near identical
results.
Added tags, tried some new things for the overlap, no luck...