Add changelog entry for the new depth method.

CHANGELOG.md

@@ -17,6 +17,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - The option for a smooth slab temperature structure that conserves mass with distance along the slab surface. \[Magali Billen; 2021-07-28; [#323](github.com/GeodynamicWorldBuilder/WorldBuilder/pull/323)\]
 - The option for a temperature model for an oceanic plate with a constant age using the plate model. \[Haoyuan Li; 2021-10-29; [#344](https://github.com/GeodynamicWorldBuilder/WorldBuilder/pull/344)\]
 - The cmake targets to easily switch between debug and release mode \[Menno Fraters; 2021-10-31; [#361](https://github.com/GeodynamicWorldBuilder/WorldBuilder/pull/361)\]
+- A new depth method for the spherical coordinate system called begin at end segment. This adds the spherical correction to the end of the segment instead of the beginning, resulting in a smoother transition between segments. \[Menno Fraters; 2021-11-06; [#364](https://github.com/GeodynamicWorldBuilder/WorldBuilder/pull/364), [#365](https://github.com/GeodynamicWorldBuilder/WorldBuilder/pull/365)\]
 
 ### Changed
 - The World Builder Visualizer will now use zlib compression for vtu files by default. If zlib is not available binary output will be used. \[Menno Fraters; 2021-06-26; [#282](github.com/GeodynamicWorldBuilder/WorldBuilder/pull/282)\]