[NEW]
* Choose between km and miles
* Search athletes by their bib number
* Show warning that data may not be up-to-date when no network connection is available
* Added privacy policy
* Option to clear the cache
* Various tooltips for buttons

[CHANGED]
* Only show live data on dashboard and athlete details during the race
* Improved caching (refresh cache more regularly during and after the race)
* Upgraded dependencies and moved to AndroidX

[FIXED]
* Various regressions in new versions of Flutter or package dependencies