1.6.1 (2024-10)

• Fixed an issue where Control.DeepSeq.Unit, exported as of version 1.5.1.0, conflicts with Numeric.Units.Dimensional.Unit (#228).
• Fixed broken links to the Tau and Pi manifestos (#229).

1.6 (2024-08)

• Added a package flag binary, enabling optional dependency on the binary package to provide instances of Binary.

1.5 (2022-06)

• Add Julian decade and millennium to NonSI.
• Rename deka prefix to deca in accordance with international spelling.
• Change astronomicalUnit symbol to lowercase (au).
• Remove semigroups dependency.
• Significant documentation improvements.

Thanks to @konsumlamm for many contributions!

1.4 (2021-05)

• Add calorie to NonSI.
• Remove deprecated AutoDeriveTypeable pragmas. This means that Typable instances are no provided on GHC prior to 8.2.

1.3 (2018-12)

• Breaking: Changed the Show instances for UnitName, Unit, SQuantity to use non-breaking spaces within unit names and between values and their units.
• Bumped exact-pi dependency to < 0.6.
• Added the dimensionless unit percent.
• Added dimensionless wrappers for log1p, expm1, log1pexp, and log1mexp from the Floating class.

1.2 (2018-11)

• Add NoStarIsType extension and import Data.Kind.Type for GHC 8.6 compitbility. Abandon compatibility with GHC < 8.

1.1 (2018-03)

• Added Semigroup instances for GHC 8.4 compatibility.
• Breaking: Renamed Root type family to NRoot. Added Sqrt and Cbrt type synonyms. Added sqrt and cbrt for term level dimensions.
• Breaking: Changed Numeric.Units.Dimensional.Prelude to export dimensionally typed signum, recip, and logBase instead of the ones from Prelude.
• Breaking: Changed Numeric.Units.Dimensional.Prelude to export (.) and id from Control.Category instead of from Prelude.
• Breaking: Created a product function which take the product of a foldable structure of Dimensionless values. Exported this product function from Numeric.Units.Dimensional.Prelude instead of the one from Prelude.
• Breaking: Changed the HasDimension typeclass to require an instance of the new HasDynamicDimension typeclass.
• Breaking: Added operators for AnyUnit to the Numeric.Units.Dimensional.Dynamic module which may cause name collisions.
• Breaking: Added dynamic versions of (*~), (/~), and siUnit to the Numeric.Units.Dimensional.Dynamic module which may cause name collisions.
• Breaking: Removed exports of nMeter, nSecond, kilo, etc from Numeric.Units.Dimensional.UnitNames. Access these instead by inspecting the relevant units or prefixes.
• Breaking: Generalized the type of dimensionlessLength from (Num a, Foldable f) => f (Dimensional v d a) -> Dimensionless a) to (Num a, Foldable f) => f b -> Dimensionless a. This provides a weaker constraint on the type a and may result in ambiguous types in code that depends on the former less general type.
• Fixed a bug in the definition of the inHg_NIST.
• Fixed a bug in the interchange name of the Dalton.
• Added units for the US survey foot, yard, inch, mil, and mile.
• Added the short ton as a unit of mass.
• Clarified that the UCUM acre is based on the US survey foot.
• Added a version of the acre based on the international foot.
• Added Data, Generic, Typeable and NFData instances for many ancillary types.
• Added unQuantity to the Coercion module to ease unwrapping without introducing ambiguous type variables.
• Created explicit representation of metric Prefixes.
• Added a multiplicative Monoid instance for AnyQuantity and for AnyUnit.
• Added the DynQuantity type to represent possibly valid quantities of statically unknown dimension, suitable for performing arithmetic with such quantities.
• Added nroot function for term-level dimensions.
• Added the Numeric.Units.Dimensional.Float module with convenient wrappers around functions from RealFloat and IEEE for inspecting floating point quantities.
• Added an AEq instance for Quantity.
• Added Eq1 and Ord1 instances for Quantity.
• Exposed the name of an 'AnyUnit' without promoting it to a 'Unit' first.
• Exposed a way to convert atomic 'UnitName's back into 'NameAtom's.
• Added the btu, a unit of energy.
• Added the gauss, a unit of magnetic flux density.
• Added the angstrom, a unit of length.
• Relocated git repository to https://github.com/bjornbm/dimensional

1.0.1.3 (2016-09)

• Fixed an issue with applying metric prefixes to units with non-rational conversion factors.

1.0.1.2 (2016-05)

• Support for GHC 8.0.1-rc4, avoiding GHC Trac issue 12026.
• Added support for stack.

1.0.1.1 (2015-11)

• Improved example in readme.

1.0.1.0 (2015-11)

• Added Numeric.Units.Dimensional.Coercion module.
• Bumped exact-pi dependency to < 0.5.
• Restored changelog.
• Addressed issues with documentation.

1.0.0.0 (2015-11)

• Changed to DataKinds and ClosedTypeFamilies encoding of dimensions.
• Added names and exact values to Units.
• Added AnyUnit and AnyQuantity for quantities whose dimension is statically unknown.
• Added Storable and Unbox instances for Quantity.
• Added dimensionally-polymorphic siUnit for the coherent SI base unit of any dimension.
• Added some additional units.

0.13.0.2 (2015-04)

• Corrected definition of lumen.

0.13.0.1 (2014-09)

• Bumped time dependency to < 1.6.

0.13 (2014-02)

• Bump major version (should have been done in previous version).

0.12.3 (2014-02)

• Bump numtype dependency to 1.1 (GHC 7.8.1 compatibility fix).
• Added Torque.
• Added D.. for the type synonym quantities (e.g., Angle).

0.12.2 (2013-11)

• Added FirstMassMoment, MomentOfInertia, AngularMomentum.
• Improved unit numerics.

0.12.1 (2013-07)

• Typeable Dimensionals.

0.12 (2013-06)

• Polymorphic _0 (closes issue 39).
• Added astronomicalUnit.
• Added imperial volume units.
• Added 'mil' (=inch/1000).
• Added tau.
• Added KinematicViscosity.

0.10.1.2 (2011-09)

• Bumped time dependency to < 1.5.

0.10.1.2 (2011-08)

• Bumped time dependency to < 1.4.

0.10.1 (2011-08)

GHC 7.2.1 compatibility fix:

• Increased CGS context-stack to 30.

0.10 (2011-05)

See the announcement.

0.9 (2011-04)

See the announcement.