- adds option for "solar midnight".
- adds ~110 world places; North American capitals, major cities, and others.
- adds an indicator to sun dialog when the displayed time is adjusted by DST.
- fixes bug where "sun position grid does not re-align when DST changes" (#867).
- fixes bug where "sun position graph labels are always displayed using 12h time".
- improves UI when configuring time offsets for custom events, alarm, and bedtime settings.