forecast.xgbar() is inaccessible with R 3.5.0

[SpencerDH]

I have installed forecastxgb from GitHub, but forecast.xgbar() is unavailable even when the package is loaded into the workspace. The version of R being used is 3.5.0.

Reproducible example:

`install_github("ellisp/forecastxgb-r-package/pkg")
library(forecastxgb)

sample_ts <- ts(sample(8:30, replace = TRUE, size = 25))

xgbar_season <- xgbar(sample_ts)

fcast <- forecast.xgbar(xgbar_season)`

This returns the error:

Error in forecast.xgbar(xgbar_season) :
could not find function "forecast.xgbar"

xgbar() works fine. Additionally, the help files for the forecastxgb functions are unavailable and return an error saying that the forecastxgb.rdb file is corrupt.

[ellisp]

forecast.xgbar isn't designed to be called explicitly but should work as just the .xgbar method for forecast. Does forecast(xgbar_season) work for you?

I can't reproduce the problem with the help files; perhaps try re-installing?