v1.35.0

• add: planned tours can now be filtered (#123)
• add: send notifications for maintenance reminders via ntfy (#168)
• add: tile hunting heatmap: new map where each tile will be colored according to the number of workouts that visited each tile (#184)
• add: chart "duration per workout" now also includes fitness workouts (#181)
• add: new chart: duration per month (#180)
• fix: missing y-axis title in all charts
• fix: gpx track download: add name to gpx metadata (#183)
• chore: update dependencies (#179)