Add R package

[BillyZhongUOM]

Can anyone please add the following R package?

tsModel Epi vcd

[BillyZhongUOM]

The package "tsModel" will easily generate lag residual in an interpreted time series analysis. It can help adjust autocorrelation within the model which is really needed.

[StevenMaude]

The Epi package was previously added in #82, but not sure if there's a problem with it: #84.

I also note this comment in packages.txt:

# Epi - installed but the automated test import doesn't work for it

[StevenMaude]

@bloodearnest: do you have any more context around what the status of the Epi package is here?

If I run the current published R Docker image, then I get:

> library("Epi")
Error in library("Epi") : there is no package called 'Epi'

I then ran ./add-pkg.sh Epi which seemed to work fine and then using that version of the image, it seems to work as intended:

> library("Epi")
> data(lungDK)
> lungDK
    A5   P5   C5 up       Ax       Px       Cx    D          Y
1   40 1943 1898  1 43.33333 1944.667 1901.333   52 336233.833
2   40 1943 1903  0 41.66667 1946.333 1904.667   28 357812.667
…

(lungDK is a feature of the Epi package.)

Possibilities:

• some kind of transient glitch in trying to add this package?
• was the package added but the image not pushed?
• the previous Epi version didn't work (2.44) but this one did (2.46)?
• something else I've not thought of which breaks things non-locally?