Add listener for exit button
Add mouseListener for Desktop. Add class Point, Edge, iterface GraphicObject
additional to previous commit + add start/end point to Edge
add actionListeners
delete useless files
Update gitignore to ignore bin/ and .settings/
work to add Edge paint algorithm

Edge now is extended from JComponent;
extend GraphicObject's interface
add action for button "new"
add EDGE mode to Desktop.
add Edge painComponent method
Implement edge's draw algorithm(DDA)
move special algorithm part to EdgeDDA class. Edge use standart drawLine method
Add EdgeDDA to menu
Merge branch 'master' of https://github.com/abramovpav/by.bsuir.iit.abramov.giis.GGE