diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2006-2013, Bjorn Buckwalter.
+Copyright (c) 2006-2014, Bjorn Buckwalter.
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/Numeric/Units/Dimensional/Quantities.lhs b/Numeric/Units/Dimensional/Quantities.lhs
--- a/Numeric/Units/Dimensional/Quantities.lhs
+++ b/Numeric/Units/Dimensional/Quantities.lhs
@@ -314,12 +314,17 @@
 > type DAngularMomentum = Dim Pos2 Pos1 Neg1 Zero Zero Zero Zero
 > type AngularMomentum = Quantity DAngularMomentum
 
-For these we don't bother defining new type synonyms for dimensionalities.
-Is this rational?
+> type Angle = PlaneAngle -- Abbreviation
+> type DAngle = DPlaneAngle -- Abbreviation
 
-> type Angle             = PlaneAngle -- Abbreviation
-> type Thrust            = Force
+> type Thrust = Force
+> type DThrust = DForce
+
+> type Torque = MomentOfForce
+> type DTorque = DMomentOfForce
+
 > type EnergyPerUnitMass = SpecificEnergy
+> type DEnergyPerUnitMass = DSpecificEnergy
 
 
 = References =
diff --git a/changelog.md b/changelog.md
new file mode 100644
--- /dev/null
+++ b/changelog.md
@@ -0,0 +1,59 @@
+0.12.2.2 (2014-02)
+------------------
+*  Bump numtype dependency to 1.1 (GHC 7.8.1 compatibility fix).
+*  Added `Torque`.
+*  Added D.. for the type synonym quanities (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`][3].
+*  Added `KinematicViscosity`.
+
+[3]: http://tauday.com/tau-manifesto
+
+
+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][2].
+
+[2]: http://flygdynamikern.blogspot.se/2011/05/announce-dimensional-010.html
+
+
+0.9 (2011-04)
+-------------
+See the [announcement][1].
+
+[1]: http://flygdynamikern.blogspot.se/2011/04/announce-dimensional-09.html
diff --git a/dimensional.cabal b/dimensional.cabal
--- a/dimensional.cabal
+++ b/dimensional.cabal
@@ -1,10 +1,10 @@
 Name:                dimensional
-Version:             0.12.2
+Version:             0.12.3
 License:             BSD3
 License-File:        LICENSE
-Copyright:           Bjorn Buckwalter 2006-2013
+Copyright:           Bjorn Buckwalter 2006-2014
 Author:              Bjorn Buckwalter
-Maintainer:          bjorn.buckwalter@gmail.com
+Maintainer:          bjorn@buckwalter.se
 Stability:           mostly stable
 Homepage:            http://dimensional.googlecode.com/
 Synopsis:            Statically checked physical dimensions.
@@ -18,7 +18,7 @@
     far as is practical, enforce/encourage best practices of unit usage.
 Category:            Math, Physics
 Build-Type:          Simple
-Build-Depends:       base < 5, time < 1.5, numtype < 1.1
+Build-Depends:       base < 5, time < 1.5, numtype < 1.2
 Exposed-Modules:     Numeric.Units.Dimensional,
                      Numeric.Units.Dimensional.Prelude,
                      Numeric.Units.Dimensional.Quantities,
@@ -27,6 +27,7 @@
                      Numeric.Units.Dimensional.Extensible,
                      Numeric.Units.Dimensional.CGS
 Extra-source-files:  README,
+                     changelog.md,
                      Test.hs
                      Numeric/Units/Dimensional/Test.hs,
                      Numeric/Units/Dimensional/QuantitiesTest.hs,