Modules

• Abstract base class for modules
• Free modules
• Elements of free modules
• Pickling for the old CDF vector class.
• Pickling for the old RDF vector class.
• Homspaces between free modules
• Morphisms of free modules.
• Morphisms defined by a matrix.
• Finitely generated modules over a PID.
• Elements of finitely generated modules over a PID.
• Morphisms between finitely generated modules over a PID.