sps 0.6.4

• Small improvements to the documentation.

• Now using {tinytest} and {litedown}.

sps 0.6.3

• Extra arguments to sps_iterator() now work correctly (#9).

sps 0.6.2

• Added divisor_method() to more easily generate divisor functions for
  prop_allocation() by name.

• prop_allocation() is now faster.

• Added sps_iterator() to make an iterator that draws a SPS one unit at a time.

sps 0.6.1

• Added a new vignette to show how inclusion probabilities are calculated.

• inclusion_prob() and sps() now use kit::topn() when available for
  partial sorting.

sps 0.6.0

• inclusion_prob() is now faster with a single stratum, improving the performance
  of sps() and expected_coverage().

• By default, sps_repweights() automatically picks the smallest
  tau to keep the replicate weights from being negative. Inspired by
  svrep::make_gen_boot_factors().

• Now requires R >= 4.1, which has been the case for a while (closing #2).

sps 0.5.4

• Added becomes_ta() to determine the sample size when a unit enter the
  take-all stratum.

• Internal changes to the way classes are instantiated. No user-visible changes.

• Updated maintainer email.

sps 0.5.3

• Documentation only; no changes to any functions.

Version 0.5.2

• Added a vignette.

• A single sample size is now recycled for each stratum when drawing samples or calculating inclusion probabilities.

• Added a cutoff argument that puts units with sizes above the cutoff into a take-all stratum.

• sps objects now inherit from numeric instead of integer.

• Replacement methods for length and levels no longer mangle sps objects.