ropensci/GSODR: v3.1.2

Simplify NA value replacement in "PRCP" column.

The PRCP column values are rounded to two decimal places as in original GSOD data, not one.

The TEMP_ATTRIBUTES, DEWP_ATTRIBUTES, SLP_ATTRIBUTES, STP_ATTRIBUTES, VISIB_ATTRIBUTES and WDSP_ATTRIBUTES columns are formatted as an integer not character.

Better tests for the generated weather data data.table output checking values and formats.

Tests are updated for updated data availability in the GSOD data due to continuous improvements to the data set.

Standardise handling of author/contributor comments. None have a full stop now in the comment.

Use on.exit() to reset the working directory to the original user-space value after changing the working directory to untar files located in tempdir().