doc: more notes

docs/devlog/v0.2.1.md

@@ -23,3 +23,10 @@ I rounded out `lofitime` traits and even wrote tests!
 
 I'm annoyed that all my builds are marked as "failed" because they don't pass
 the cargo formatter. Now is not the time for formatting! I removed this test.
+
+I implemented the egui datepicker with hifitime Epochs and it compiles and
+"works" (as in, it does not crash and the UI looks right). When I select
+options in the UI, it doesn't propagate back to the Coordinate Time resource.
+I'm not sure why this is the case, but it happens for _both_ options: timescale
+(which does not involve lofitime) and the date picker (which uses lofitime).
+I'm pretty sure lofitime isn't the problem here.

spacetime/src/ui/shell.rs

@@ -1,6 +1,5 @@
 use bevy::prelude::*;
 use bevy_egui::{egui, EguiContexts};
-use hifitime::TimeScale;
 use crate::physics::time::CoordinateTime;
 
 /// The main Ui that contains everything else. This should be just Egui sugar that triggers events handled elsewhere.