get coordinates from parser log, or from coordinates file taken from parser log.  Get cell from static/info if it is listed

updates to ASE interface.  Now supports experimental Octopus feature LatticeVectors, will not crash with spinors, input file parser can evaluate simple mathematical expressions (like 5 * angstrom) and uses a namespace to manage assignments

handle units correctly for simulation_cell.  Also, the UnitsInput parameter can override Units.  This is taken into account now

include new version of ase octopus parser because it is not out yet.  This fixes some Python3 compatibility issues and contains other improvements.