Various bug fixes

Various bug fixes

Various bug fixes and performance improvements

* UI improvement
* Bug fixes

Change: The bonus 'Rebellion' Campaign is now available to all players without requiring an email registration.
Fix: Some sound effects not playing following the last update.

Fix: A critical issue displaying the curved loss meters after the previous graphics update.
Change: A reduction in the download size.

Add: Support for the Metal graphics system on all Apple devices, improving graphics performance.
Change: Improved A.I. opponent.

Fix: An issue with some load/reload animations not displaying. This could give the impression that a unit was not firing.
Change: Improved A.I. opponent.
Fix: Some screen layout issues.
Fix: Invalid font selection on some buttons on some platforms.
Fix: Some projectile animations not displaying.
Fix: The in-game player message were sometimes cropped at the left edge of the screen.

Improved: The AI has received some updates.

Fix: Wrong loss condition shown in Harlem Heights scenario.
Fix: Win, loss conditions for the Stony Point scenario.
Change: Load and Save screen.
Change: Small changes to UI layout.
Fix: Units may sometimes have been unable to attack adjacent enemy huts or tents unless charging.
Change: When a general ends alone in a hex adjacent to an enemy, after enemy shooting, it now evades if possible, or is destroyed.
Fix: Some time flank attacks provided no benefit in combat.
Fix: A rare crash which could occur after charging.
Fix: Some line of sight issues from high hill hexes across lower hill hexes.
Change: Improved map zoom.
Change: Improved base Line of Sight range in some missions.
Change: Faster A.I. execution during larger missions. larger missions.

Change: We have moved the game to a our new engine.
Change: Game performance is much faster and graphical execution smoother.
Fix: Improved memory management.
Fix: Improved hex tile Positioning accuracy.
Add: A whole new way to play, 'Historical Mode'. This is now an option on starting a new mission.
Add: Change log for all updates in the latest edition of the game.
Add: Change log to the help menu.
Add: The ability to unlock all scenarios in the settings menu.
Add: A Change speed option in settings. This has three options standard, slow and fast which effects how fast the game plays.
Change: Some UI updates.
Change: Reduced the length of some melee and shoot animations.
NOTE: The old map zoom had to be removed as it was causing issues with the new engine, we are working on an alternative.

Fixes a problem in "Brooklyn (Long Island)", Nemesis Campaign, that prevented the player from winning the scenario through the time limit option.
Fixes a problem in "Germantown", Resistance Campaign, where some units were not released correctly from turn 3.
Fixes a problem in "Story Point", Resistance Campaign, where some units were not released correctly.
Improve Player messaging during gameplay.
Improve A.I. decision making in scenarios including static units.