configuration file changes for new data preparation options. phase unwrapping on upper and lower limits.
changed the phase unwrap to accept upper and lower limits.
made configuration file changes and added support for new section method. this config file gives .112 l2 error on the benchmark velocity dataset.
modifications for the paper, and config.ini now has values attaining .108 L2E for Solver4.
10.93 solver4 configuration and edits to icip paper.
config file changes to try to get 1-d sampling working
added mask boundary code and fixed maske from Dan Holland's data
this version produces 8.7%! l2e, with an improved l2e boundary  metric. moved appplication of mask prior to the main algo from prepare, so that it occurs on the observed, not ground truth, data.