refactoring, add menu, tray, start adding kdb databases with kppy module
add basic functions for work with kdb databases, save befor change basic functions
index on master: 26da692 add basic functions for work with kdb databases, save befor change basic functions
WIP on master: 26da692 add basic functions for work with kdb databases, save befor change basic functions
change the structure of the application
add more tests
add keepr test
now work with kdb files
change license to LGPL