Tactics, Leaders, New Units, and More

To summarize the (major?) content from this update:

1. Moves now have a preference, for example "Slash" and "Double Slash" will prioritize the front row, while currently everything else tries to go for the back row.

2. Squads now require a Leader. Leader units are denoted with an "L" in the corner (hard-coded for now) and Squads will tell you if they are missing a Leader unit. Currently, only Leaders have nicknames, but more units will have them once the unit pool in the Army Menu is not hard-coded.

3. NPCs are around to provide some useful (?) information.

4. Units in the overworld will now visually move towards the target. Also, player unit sprites are now represented by the leader.

5. Unused assets have been removed, so the file size is now much smaller.

6. Two new units: Camus, the elemental archer who targets the back row, and a Phoenix, who hits a target and anyone adjacent to it.

7. The name of the move being used is now displayed in battle.

8. Minor fixes - Summoners attacking dead people, music volume turned down, selected player units no longer stay selected when manually ending turn, sprites are not re-scaled in Info Menu and Army Menu anymore (don't quote me on this last one).