units 0.8-4

• Identical unit division and multiplication will now respect
  units_options(simplify = FALSE) reverting a change from #310; #355
  @billdenney

• Fix scale_units when both unit and trans are specified; #357

units 0.8-3

• Remove tolerance from comparisons with logical operators, restoring behavior changed in previous release; #353 addressing #351

units 0.8-2

• Names are preserved when doing unit conversions; #305 @billdenney

• Identical units will always divide (/) and allow integer division (%/%).
  And, inverse units will always be able to multiply; #310 @billdenney

• Compare units via ud_compare(), fixing inconsistent results for aliases
  and symbols; #339, #346, #347

• Fix units<-() to treat an empty unit the same as NULL; #332

• New as.data.frame() method for mixed_units; #309

• Use short paths for database loading on Windows to fix UTF-16 issues; #342

• Add example in the docs about reversing a ggplot2 units scale; #343

• Force storage mode to double; #344 addressing #324

• Fix units in transformed axis; #323

• Consider unitless as radians in trigonometric functions; #328

units 0.8-1

• fix %/% and %% if arguments have different units; #313

• fix multiplier parsing for exp(log(x)) operations; #321

• fix specification of secondary axes with scale_units; #326

units 0.8-0

• enhance unit mapping for newly installed units; #290

• remove deprecations: install_symbolic_unit, remove_symbolic_unit,
  install_conversion_constant, install_conversion_offset; #290

• fix multipliers for round trip log-exp operations; #292

• integrate ggplot2 scales (previously in the ggforce package) to
  automatically print axes with units; #294 addressing #164

• fix all.equal.units for non-units current

• fix zero power; #285

• fix unique.units to support arrays and matrices, implement methods for
  duplicated and anyDuplicated

• fix plot labels with spaces; #298 addressing #297

• always add units to labels, including user-provided ones; as part of #298

• new symbols/names with a percentage character are not allowed due to an
  upstream bug; #289

units 0.7-2

• enhance pillar integration; #273, #275, #280 @krlmlr

• new unique method for units and mixed_units objects; #283 addressing
  #277 @lewinfox

units 0.7-1

• allow longer units grouping; #270 addressing #269 @bart1

• fix regression in set_units method for mixed_units to ensure that
  ordering is preserved; #272 addressing #271

units 0.7-0

• add load_units_xml to enable database reloading as well as loading
  user-provided unit systems; #254 addressing #243, #244

• add install_unit and remove_unit for adding/removing custom user-defined
  symbols or names, with optional mapping to existing units;
  install_symbolic_unit, remove_symbolic_unit, install_conversion_constant,
  install_conversion_offset are deprecated; #261 addressing #89

• add keep_units, a helper to apply functions that do not preserve units;
  #255 addressing #252

• fix as_units(""), which is now equivalent to unitless; #199

• fix plot axes for plot.formula and plot.data.frame; #213

• fix arithmetic for powers above 1 and below -1; #264

• improve arithmetic of logarithms; #249

• export ud_are_convertible; #263 addressing #258 @cregouby

• remove deprecations: as.units, as_cf, make_unit, parse_unit; #259

• remove deprecated pre-computed ud_units database; #259

units 0.6-7

• port isFALSE to fix regression in old R versions; #230 addressing #229

• fix replacement operation for units objects; #233 addressing #232

• fix compatibility with dplyr 1.0; #247 addressing #239

units 0.6-6

• prettier str print for units and mixed units; #228 addressing #227

• add compatibility with upcoming tibble v3.0.0; #225