v0.29.0

This release includes a number of changes for Angle, the addition of SolidAngle, and a new units for Energy and Luminance. Many thanks to adamreichold, AnickaBurova, and Atmelfan for pull requests included and issues resolved in this release.

Added

• #196 SolidAngle quantity added.
• #191 Add constants to Angle and SolidAngle representing half and full turns.
• #194 Add foot-candle unit to Luminance.
• #200 electronvolt-based Energy units added.

Changed

• #192 Use f{32|64}::powi instead of Typenum::Pow::powi.
• #123 Change examples to use Display instead of Debug.

Removed

• #188 [Breaking] Remove From/Into impls for Angle and SolidAngle.