Class to hold model parameters
Printing of parameter class
a and b functions
Plot functions a and b on the same plot
Add c() function to the class
Added test suite
Test functions a, b, c
Test shapes of a, b, c
Compute unconditional moments of the process
Simulate and plot ARG(1) model
Fix mistake in vsim2 scaling
Test simulation
Docstrings
Vizualize marginal density of ARG process