changelog
    
    
    - Mon, 27 Jul 2020 13:12:40 +0200
 
    - by Mike Becker <universe@uap-core.de> [Mon, 27 Jul 2020 13:12:40 +0200] rev 18
 
    - the MainMenu IS a JMenuBar
 
    - Mon, 27 Jul 2020 12:52:34 +0200
 
    - by Mike Becker <universe@uap-core.de> [Mon, 27 Jul 2020 12:52:34 +0200] rev 17
 
    - removes unused test
 
    - Mon, 27 Jul 2020 12:51:20 +0200
 
    - by Mike Becker <universe@uap-core.de> [Mon, 27 Jul 2020 12:51:20 +0200] rev 16
 
    - adds numpad test
 
    - Mon, 27 Jul 2020 12:08:23 +0200
 
    - by Mike Becker <universe@uap-core.de> [Mon, 27 Jul 2020 12:08:23 +0200] rev 15
 
    - fix: window cannot get smaller than the field
 
    - Mon, 27 Jul 2020 11:57:42 +0200
 
    - by Mike Becker <universe@uap-core.de> [Mon, 27 Jul 2020 11:57:42 +0200] rev 14
 
    - renames help menu
 
    - Mon, 27 Jul 2020 11:56:41 +0200
 
    - by Mike Becker <universe@uap-core.de> [Mon, 27 Jul 2020 11:56:41 +0200] rev 13
 
    - adds SudokuTextFieldTest
 
    - Mon, 27 Jul 2020 10:56:17 +0200
 
    - by Mike Becker <universe@uap-core.de> [Mon, 27 Jul 2020 10:56:17 +0200] rev 12
 
    - fixes some code inspection issues
 
    - Sat, 25 Jul 2020 15:56:48 +0200
 
    - by Mike Becker <universe@uap-core.de> [Sat, 25 Jul 2020 15:56:48 +0200] rev 11
 
    - missing class documentation