* Base functions `is.element()`, `%in%` and `match()` now properly recognize
declared objects
* Bug fix affecting declared character objects, via `as.character.declared()`
* New functions `anyNAempty()` and `anyNAdeclared()`
* More effort on meeting Good Practices for pkgcheck()
* Bug fix hapenning on r-devel, to silence CRAN errors
* Improved method for `rbind()` data frames, taking care of declared variables
* Function value_labels() has been replaced with the generic base function
`labels()`, and the function `variable_label()` has been replaced with the
function `label()`
* Changed default for `as.factor()`, with values and (where available) levels
(thanks to Daniel Antal for the report)
* New generic function `drop_na()` to drop information about the declared
missing values
* Correctly determine the object mode, function of both value labels and
input values (especially when all input values are empty NA values)
* New argument "`measurement`" in function `declared()`
* New function `measurement()`, to query and allocate measurement levels
* New logical argument "`values`" in the S3 method for `as.character()`
* Removed aliases `as_declared()` and `as_haven()` from the namespace
* Fixed `as.haven()` which should return double objects
* Class method for many / most primitive functions, with declared objects
* Bug fix in `w_table()` affecting zero frequency categories
* Dropped alias `frtable()` from function `w_table()`
* New function `is.empty()`, testing the presence of undeclared missing values
* Main function `declare()` is now generic, allowing flexibility to create
custom methods for any other classes of objects
* Removed dependency on package admisc, by incorporating the necessary
functionality as internal functions
* New functions `w_mode()` and `w_standardize()`
* Fixed `w_summary()`, summaries should not be rounded by default
* Fixed `w_mean()` to weight negative values
Thanks to an anonymous reviewer for reporting and suggesting the following:
* New argument "`drop`" in function `undeclare()`
* Bug fix in the class methods for `head()` and `tail()`
* Function declared now duly recognizes input factors
* Extended `as.factor()` for objects of class "`declared`"
* Added proper class methods for primitive arithmetic operations
* New functions `as.declared()`, `is.declared()`
* Added explanatory documentation (for instance in the DESCRIPTION file) to
explain the reasons for reimplementing some of the base functions
* New function `w_summary()`
* Functions `w_table()` and `w_quantile()` now properly deal with missing weights
* New argument "`trim`" in function `w_mean()`
* Fixed `w_table()`, an internal object was inadvertently returned
* Improved printing of crosstables
* New functions `w_mean()`, `w_var()` and `w_sd()`, `w_quantile()` and
`w_median()`, to obtain weighted versions of mean, variance and standard
deviation, quantiles and median, respectively, adapted to declared objects
* Fixed a bug in `as.haven.declared()`, when all values are (declared)
missing and labels are not numeric
* Argument "`weight`" changed to "`wt`" in `w_table()`
* New arguments in function `w_table()`: "`observed`" to only print observed
values, and "`margin`" to calculate proportions in crosstabs
* Function `w_table()` now accepts a second argument "`y`" to create crosstabs
* Function `frtable()` renamed to `w_table()` standing for weighted table
* New argument "`weight`" in function `frtable()`, allowing to weight not
only valid but also missing values
* More robust function `frtable()` in treating declared values with
overlapping labels (e.g. hierarchical ISCO codes and categories)
* Fixed a bug in `declared()` when all values are completely missing
* Improved treatment of equality and non-equality, now accepting labels as
well as values
* Reverted functionality to not dropping the attributes in arithmetic
operations, this is now left to the users' preference
* Bug fix saving declared data frames as .csv files
* `as.declared()` now retains the "format.spss" attribute, if existing
* Improved treatment of arithmetic operations, attributes are no longer
propagated (thanks to Randall Pruim for the suggestion)
* Modified as.haven() for objects of class "`declared`", to avoid a bug in
package ReadStat that prevents exporting missing values to SPSS for
integer variables