Added code to test get_av_link function in Lattice
Reduced tolerance in lattice tests
Switched import to catch-all method
Added optional data argument to Observable.__init__ to maintain consistency.
Added test for Observable base class
Added code to generate a random set of complex numbers inside the unit circle
Switched npr.rand for npr.random in Observable test
Added removal of test output file to Observable test
Added use of random_complex to Observable test class
Added test Config class to pyQCD tests
Substituted two line initialisation of config data for one line.
Switched back a case of random_complex to npr.random
Fixed bad function reference to random_complex function.
Fixed bad reference to random_complex
Fixed incorrect assignment of num_sink_smears in Propagator constructor
Fixed bad references to random_complex
Added test for propagator object
Substituted swap axes function for transpose function to make code more succinct
Added skeletons of other test classes
Added Wilson loop calculation optimization to todo list.