Astsa

+ Updated `mvspec` due to possible plot error being caused by use of `panel.first` (tries to draw `grid` before `plot` is called on some machines or OS). Note to self: avoid `panel.first` dumb ass.

+ Updated `arma.spec` to avoid same problem as `mvspec`

+ While I'm here, updated `tsplot` to avoid similar problems.

+ added the ability of `tsplot` to do multiple plots, for example,<br/>
`tsplot(eqexp[,1:8], col=rainbow(8), ncolm=2, lwd=2, main='EQs')` <br/> - there's no change for univariate time series.


+ added ellipses ( &hellip; ) to `lag1.plot` and `lag2.plot` so you can change some of the graphical parameters; e.g., `lag1.plot(soi, max.lag=4, pch=20, cex=1.5, col=rgb(0,.5,1,.5))
`

+ fixed some man pages (after cRan submission)

+ This version is essentially version 1.8.8 but with changes made to pass the CRAN tests, which mainly deal with the man pages (help files).

+ For the Springer text, you can see the difference between v1.8 and v1.9 by looking at the changelog below v1.8.8. Some scripts have added capabilities, but it won't change any data analysis. The only real difference will be slight numerical differences in the reported ICs in `sarima`.

-------------------------------------------
Versions 1.8 - Dec 2017

+ Fixed &beta; reporting for `LagReg()` when `inverse=TRUE`... it is correct in the text example.

+ Added ability to fix parameters in `sarima()` and `sarima.for()`. Works just like it does in the stat package `arima()` but `transform.pars` is set to `FALSE` automatically if parameters are fixed.

+ Added a little explanation of how ICs are calculated in the `sarima()` man page.

1.8.7 Added `Grid()` combining `grid(lty=1, col=gray(.9))` and `minor.ticks()` from Graphics and Hmisc packages. It's used in most scripts that used to call `grid()`.

1.8.6 Added `ssm()` for fitting a simple univariate state space model. This will be used in the forthcoming text.

+ `lag1.plot` and `lag2.plot` now have color option for the points with default `gray(.1)` for a little nicer display
+ added `cardox` data set, an update to `co2` in the datasets package, which stopped in 1997 (now to the end of 2018)
+ tweaked `sarima` residual analysis graphic so it has less white space - nothing else has changed

1.8.3 changed calculation of the ICs in `sarima` ... there will be a slight difference because I didn't remove the log(2&pi;) part.