Determine Markov chain asymptotics

`xFix = asymptotics(mc)`

`[xFix,tMix] = asymptotics(mc)`

[1]
Gallager, R.G. *Stochastic Processes: Theory for Applications.* Cambridge, UK: Cambridge University Press, 2013.

[2]
Horn, R., and C. R.
Johnson. *Matrix Analysis.* Cambridge, UK: Cambridge University Press,
1985.

[3]
Seneta, E. *Non-negative Matrices and Markov Chains.* New York, NY: Springer-Verlag, 1981.

`classify`

| `eigplot`

| `isergodic`

| `isreducible`