wnear option that applies to all elements at once
Report default values in horton-esp-cost.py
reduce use of propars as function args
Simplify Partitioning API with respect to grid objects
Eliminate redundant Hirshfeld-E code
Fix a few minor bugs
Tighter default convergence criteria for iterative hirshfeld
Inrease default maxiter to 500
Include default values in --help message
Generalize grid interface in part