timeplyr 1.0.0

Major breaking changes

• Time intervals in timeplyr have been re-imagined.
  They are now fixed-width intervals which means any one time interval vector
  will have a common width for all intervals it contains, e.g. 1 month.
  This makes internal operations much faster and simplifies the logic
  for working with these objects. The data structure for these intervals
  is a vector of LHS start times with an attribute to specify the
  timespan or width of the interval. All intervals remain LHS closed and
  RHS open. As a side-note this new data structure makes it possible for
  time intervals to be used in data.table.

• Most functions which are not time related have been removed.

• Many arguments have been renamed or removed.

  • This includes the time_type
    argument which is no longer used. When specifying units such as
    days, weeks, months or years, exact timespans will be used.
  • Most functions no longer use the args roll_dst and roll_month with the
    exception of the sequence functions.
  • The time_by argument has been renamed to either width or timespan
    depending on the context.

• Functions time_expandv, time_completev, time_span_size have been
  renamed to time_grid, time_complete_missing, time_grid_size respectively.

• Functions time_summarisev and time_aggregate have been removed, use
  time_cut_width instead.

• time_cut has been deprecated and renamed to time_cut_n.

• edf, asc and desc have been removed as they do not fit the
  purpose of the package.

• .roll_na_fill has been removed.

New features

• A custom timeplyr object timespan to create and use
  timespans for various operations.

• New functions resolution and granularity to calculate
  the resolution and granularity of a time vector respectively.
  See the help page ?resolution for more details.