added Torus primitive wrapper
added RHC primitive wrapper
added RHC primitive wrapper
added EPA and EHY primitive wrappers
added Hyperboloid primitive wrapper
added ETO primitive wrapper
add test for rpp.s
added Particle primitive wrapper
Break test_defaults in individual test cases per primitive type
added Pipe primitive wrapper
added copy and is_same methods to all wrapped primitives; test saving primitives to the DB
added WDB.delete; rename WDB.lookup_internal to WDB.lookup
added test_save_combination
Merge wdb-wrapper branch