Various bug fixes

Various bug fixes

Various bug fixes and performance improvements

Fix: Some sound effects not playing following the last update.

Add: Support for the Metal graphics system on all Apple devices, improving graphics performance.
Change: Updated the combat capabilities of Cavalry armed only with Pistols.
Change: Improved A.I. opponent.
Fix: Missing some mount dismount button options.
Fix: Some screen layout issues.
Fix: Invalid font selection on some buttons on some platforms.

Fix: Change: Tutorial 2, so all units start in shooting range of each other.
Fix: Change: The unit shoot animations of 'fire and reload' often not working, giving the false impression that units did not, or could not shoot.

Fix: Some projectile animations not displaying.
Fix: The in-game player message were sometimes cropped at the left edge of the screen.

Change: Improved A.I. opponent.
Fix: Some screen layout issues.
Fix: Some units blocked from changing formation when playing on some wide screen devices.

Improved: AI has received a pass to help improve performance.
Change: Some UI updates.

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 units were not getting their shock combat bonus in a charge combat.
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.
Fix: An issue where changing formation while leaders and artillery are in the same hex could sometimes cause a crash.
Change: Improved map zoom.
Change: Base line of site improvements.
Change: Faster A.I. turn execution.

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.

Fix victory conditions for the Pleasant Hill scenario.
Fix issues in Tutorial 4.

Fix an issue where infantry reinforcements would arrive in line instead of column formation.