D3surveyor v0.6.0

• Large refactor, old projects may not fully load
• Fix mappings outside the viewing frustum not updating their true projection
• Rewrite projection code
• Calculate camera residue based on pixel distance in the projected image instead of angle difference
• Use horizontal angle of view instead of longest side angle of view
• Add Brown-Conrady distortion model
• When loading projects, use default values for non existing fields