* Files needed for Game are now only loaded once, except from LEVEL1.PLT.
* Added DevMenu to get debug info.
* ISR_LoadMenuVBlank() does not stop when accessing SIO.
* On fopen() and SERIAL_INTERFACE defined, "#" is prepended and "@" is appended to filename string.
* (Bugfix): on AircraftGetTileFromFlightDataIndex(), a buffer overrun was caused when asking for index = AIRCRAFT_INVALID_IDX.
* Added new parameters for some building types. Still some work pending.
* Removed obsolete, unused functions.
* Performance optimization: routines inside GameCalculations() were computating a big loop several times, so this has been modified so that loop is only performed once.
* Initial implementation for GameGetAircraftTilemap(). Still some work TODO.
* Timers with no repeat flag were being set to NULL, but this is not actually desired!
* Reenabled transparency for aircraft shadow.
* Deprecated NotificationRequest flags, and replaced by system timer handling.
* DrawEnv and DispEnv buffers are no longer swapped using DMA commands, but GPIO. This ensures stability under real hw. TODO: how to fix in 2-player mode?
* Provisionally removed semi-transparency for aircraft shadow sprite.
* Remove unneeded whitespace character on pointer variables (unary operators should not have any whitespaces).
* SelectedAircraft index now increases or decreases automatically on aircraft added/removed.
* Started writing Plt generation routines. Still a lot of work TODO.
* Aircraft should not be removed on State == STATE_APPROACH.
* Initial implementation for finished game.
* Added some comments on System.c.
* GameGuiPrepareNotificationString() deprecated.
* Solved issues with linked list overflow. A detection mechanism has also been added.
* New state STATE_ENTERING_RWY.
* GameGuiActiveAircraftList has been moved from GameGui to Game module.
* Active aircraft list for each player is now updated each time that a new flight either appears or disappears.
* Other minor fixes.
* Unboarding state now totally implemented.
* (Bugfix): Incorrect aircraft was selected on ShowAircraftData.
* Gfx1HzFlash() and Gfx2HzFlash() were incorrectly implemented, causing multiple ticks on a single cycle.
* Improved detection of target reaching for Aircraft.c.
* Cursor is now displayed correctly on both 1-player and 2-player mode.
* Fixed behaviour for locking/unlocking aircraft.
* Fixed menus for 2-player mode.
* Minor fixes and improvements.
* (PSXSDK internals): incorrect bit shifting was being made on 0xE3 and 0xE4 GPU instructions (drawenv management).
* (Bugfix): Timers were not being reset properly because pad1_cheat_timer and pad2_cheat_timer were being accidentally reset to NULL on calling memset() for cheatsArray.
* Timers are now updated every 100 ms instead of every second.
* Mouse sprite should be now drawn on X_SCREEN_RESOLUTION >> 2 in 2-player mode. TODO: check why this isn't working!
* New routine PadOneKeySinglePress() and PadTwoKeySinglePress().
* Temp waypoints now turn red when colliding with an aircraft or with a previously existing waypoint.
* When loading files, GPU operation is finishedbefore calling fopen. Also, I_MASK is disabled just in case.
* For PLT files, actual tile needs to be set instead of parking number.
XaviDCR92