Update CHANGELOG.md for 0.5.4 (#801)

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented here. The format is based
 
 ## [Unreleased]
 
+
+## [0.5.4] - 2023/11/03
+
+0.5.4 adds support for basic shape fitting into the model editor, some nice-to-have orientation/translation actions in the
+mesh importer, and some bugfixes.
+
 - Stations are now selectable when using the `Translate > To (select something)` and `Reorient > $axis > To (select something)`
   actions in the mesh importer (thanks @emmccain-uva, #796)
 - The mesh importer now has an option to `Reorient > $axis > Along line between (select two elements)`, which is sometimes
@@ -23,6 +29,11 @@ All notable changes to this project will be documented here. The format is based
 
 ## [0.5.3] - 2023/10/06
 
+0.5.3 adds support for persisting 3D viewport options between boots of OSC, which is handy if you have preferred visualization
+options that you typically always toggle on/off. It also adds support for importing stations into the mesh importer from a
+CSV (File > Import Stations from CSV in the mesh importer workflow), which is useful for importing (parts of) a muscle path
+into a mesh importer scene.
+
 - 3D viewport settings (e.g. muscle styling, show/hide the floor, background color) are now persisted between
   boots of OSC via a per-user configuration file (thanks @tgeijten, #782)
 - The right-click step size menu for scalar property editors now includes suggestions for masses (it assumes