v1.5.2.5

• Update wage data to 2017-Q3
• Update labour force data to 2017-09
• (internal) The lf_trend internal data table used to report the labour force in thousands of persons, as the ABS does. This seemed a bit strange, so now obsValue uses integers (i.e. just the labour force).
• Vignettes now install taxstats to a temporary directory if not already installed, rather than the user or system's library.