CHANGELOG.md

- Added scalar gradient utility (!129, !252).
- Added utility to calculate Q-criterion field (!153).
- Added support to XmlToVtk to write Jacobian field (!223).
- Added utility to calculate wall shear stress (!224).
- Fixed vorticity calculator (!138).

**MeshConvert:**
- Added face-interior quadrature and 2D/3D manifold support to spherigon code
  (!130).
- Fixes for boundary layer refinement and prism-to-tetrahedron splitting (!137,
  !202, !206, !244).

**FieldConvert (new):**
- Added new FieldConvert utility which will eventually encompass most existing
  utilities (!255).