dials 0.1.0

New parameters

• summary_stat() is a new parameter for use in recipes::step_window().

• A general class_weights() parameter was added for imbalanced models.

• prior_outcome_range(), prior_terminal_node_coef(), and
  prior_terminal_node_expo() are new parameters for prior distribution
  specification related to parsnip::bart().

• num_knots() and survival_link() are new parameters for spline survival
  models (@mattwarkentin, #195).

• vocabulary_size() is a new parameter used in
  textrecipes::step_tokenize_sentencepiece() and textrecipes::step_tokenize_bpe().

Other changes

• The new extract_parameter_dials() method supersedes pull_dials_object()
  which has been deprecated.

• activation() now supports values of "tanh".

• New link to article explaining how to make custom parameter objects was added
  to the pkgdown site.