This is an substitute for the %V and %u formats which are not implemented on Windows. In addition, the package offers functions to convert from standard calender format yyyy-mm-dd to and from ISO 8601 week format yyyy-Www-d.
Minor corrections to the documentation
Added one more example to ISOweek2date()
Moved internal functions to separate file, added keyword internal
Corrected email address of maintainer
Code was restructured and rewritten. Comments and variable names were translated from German to English.
Documentation added to R sources using roxygen2
Test cases added for use by test_that