OrthoRasterizer: De-templatize, to reduce compile time
OrthoRasterizer: More de-templatizatioin
point2dem: Load csv files
OrthoRasterizer: Separate decl and impl, to reduce compile time
Fix point2dem bugs with csv files, minor other tweaks
point2dem: Fix for large tifs
NEWS: Support csv files
pc_align, support LAS, other minor