Other utility and private classes and module

• Constants
• Intensity measure types
• Probability mass function
• Geographic primitives and utilities
  • Geographic primitives
    • Point
    • Line
    • Polygon
    • Meshes
      • Simple mesh
      • Rectangular mesh
  • Nodal plane
  • Rupture surfaces
    • Base surface
    • Planar surface
    • Simple fault surface
    • Complex fault surface
    • Multi surface
  • Geodetic calculations
  • Various utilities
• Managing pure-python and C-ext code