pluralize 0.2.1

Switched out .onAttach() for onLoad() so that importing to packages (either using @import or by declaring with pluralize::) now works

pluralize 0.2.0

Added a NEWS.md file to track changes to the package.
Normalized README to fit other package write
Updated pluralize.js
Swithed to {tinytest}
Updated vignette
Broke out the previous monolith pluralize.R into separate files.
Removed {purrr} dependency
Added "is_*" functions