Sep 23, 2019

- Added a Сonstructor section in test mode, in which you can create your tasks from a set of actions to customize the training for yourself.
- Added language change inside the application;
- Added a trendy dark theme;
- Fixed a bug in the calculation of ground speed task. Thanks to Maxim Koshevar for pointing it out;
- Increased the admission to the answer in the tasks of the first and second level;
- The dimensions and positions of the buttons for small screens were corrected in places;