Added static modifier for the tikToBlinkPause field
Passes null for nonnull parameter [FindBugs]
Integer.valueOf() replaced by Integer.parseInt() [FindBugs]
Creates a new Graphics object instead using of the existing one
Integer.valueOf() replaced by Integer.parseInt() [FindBugs]
Optimized value of MIN_WIDTH. Replaced (int) round by Math.ceil
Added caching for an rarely changing calculated fields
Added the getCompatibleImage() method
Optimization of the drawing for reduce CPU usage
Fixed checking for cachedGenuineSpeed value
Added setBackground()
Replaced some code from GameUtils to GameSound
Fixed plaing music when the tetris music is played
Fixed changing of a figures for the pentix
Fixed border width for a square
Changed the default window size from half of the screen height to
two-thirds of it