Bump version for release

Increment version number to 0.4.1

Increment version number to 0.4.0

Increment version number to 0.3.4

Increment version number to 0.3.3

Update cran-comments

Fix mention of 'ARIMA' regressors in non-ARIMA functions

Update cran-comments for release

Update wordlist

Release as v0.2.0