Simple Calculator

Mar 9, 2018

- added the ability to change the format of displayed numbers
- differentiate an edit mode from displaying calculation results by using unique colors
- fixed memory mode (after pressing M+/M- buttons the operation is performed and result stored in memory respectively)
- mark with red color the memory indicator after the first press of the MRC button
- display the memory content in application's bar
- display application version in the menu
- minor fixes concerning rounding mode