[ENH] Support forcats 1.0.0

[pwwang]

Feature Type

• Adding new functionality to datar

• Changing existing functionality in datar

• Removing existing functionality in datar

Problem Description

• https://github.com/tidyverse/forcats/releases/tag/v1.0.0

Feature Description

• New fct() which works like factor() but errors if values of x
  are not included in the levels specification

• first2() and last2() now ignore missing values in both x and y

• add fct_na_value_to_level()

• fct_explicit_na() is deprecated in favour of fct_na_value_to_level()

• fct_expand() gains an after argument so that you can choose where
  the new levels are placed

• fct_infreq() gains the ability to weight by another variable using the w
  argument

• fct_inorder() now works when not all levels appear in the data

• fct_lump_prop() and friends now work correctly if you supply weights
  and have empty levels

• fct_lump_n() and fct_lump_prop() will now create an "Other" level even
  if it only consists of a single level. This makes them consistent with the
  other fct_lump_* functions

• fct_other() no longer generates a warning if no levels are replaced with
  other

• fct_relevel(), fct_cross(), and fct_expand() now error if you name the
  arguments in **kwargs since those names are ignored and your code probably
  doesn't do what you think it does (see also fct_relevel() should gain fct_recode() functionality tidyverse/forcats#319).

• fct_reorder() and fct_reorder2() now remove NA values in _x with a
  warning. You can suppress the warning by setting _na_rm = True (see also fct_reorder() yields unexpected result in presence of missing values tidyverse/forcats#315).

• fct_reorder() and fct_reorder2() gain a new _default argument that
  controls the placement of empty levels (including levels that might become
  empty after removing missing values in _x) (see also fct_reorder() needs na_last argument tidyverse/forcats#266).

• fct_unique() now captures implicit missing values if present

Additional Context

No response