Bump version to "p.5.4".
Try to fix crosshairs.
Bump version to "p.5.4+dev1".
Reflect 'noshield' mutator in manual, loadout screen and "fatal damage" text.
Reflect 'lowhealth' mutator in manual and loadout screen.
Small fix to 'shield' manual entry.
Add 'nodamper' mutator.
Add 'novamp' mutator.
Add Super Sniper ROFL.
Add 'supersniper-arena' mutator.
Add 'INSTAGIB' mutator.
Update NEWS file.