Matrix operations

Nov 28, 2018

Added the representation of solutions in the form of ordinary fractions;

Added settings window. You can configure the following parameters in it:

- Presentation of the result in the form of:
1) Ordinary fractions;
2) Decimal fractions;
3) Without solution (only result);

- Keyboard settings:
1) Enable/disable vibration feedback;
2) Enable/disable the click sound;

- Change interface language