Version 1.4, October 14 2001
----------------------------
Bug fix release to correct problems for phone with a small screen (such as
the Nokia 6310i). Added an extra screen with license info so that people know the game is GPL.
Added the improvements developed by Pavel Machek (displaying the level at the beginning of each
stage, not resetting the ship position at the beginning of the stage, correcting the mechanics equations
so that the rockets fired take into account the velocity of the ship).

Version 1.3, October 25 2001
----------------------------
Fixed a bug in the polygon rasterization method. The fix gives more accurate collision
detection. Restored the keyRepeated method which had been removed in 1.2 in an effort 
to limit the number of events generated	and speed things up (it turns out is was a bad idea). 
The keyRepeated() method now also allows autofire. Fixed two numeric precision bugs which
caused the graphics to be slightly distorted and ship to be unable to rotate back to its
exact original angle.

Version 1.2, October 24 2001
----------------------------
This is again a performance release, as the performance of 1.1 still did not seem fast
enough for actual java phones. I have simplified collision detection a lot and replaced
geometry based collision detection with a simpler pixel-based collision detection. I
changed event handling also so that actual event processing is done in the game thread

Version 1.1, October 4 2001
---------------------------
This is mostly a performance / bug fix release. No new classes have been added, 
though a lot of shuffling has occurred within the classes themselves.

New features:
+ Faster ship
+ Ship movement can be controlled with the UP key also.

Bug fixed:
+ 0001 Field thread was not destroyed at exit (which would cause 2 Field threads to be runnning
when the game was relaunched, causing every objects to move twice (and thus twice as fast !)).
+ 0002 Once maximum ship velocity was reached, engine burns in the opposite direction where also
ignored, causing the ship to keep moving at its maximum velocity.

Version 1.0, September 9 2001
-----------------------------
Initial release
