v1.1

Trails added

• config trails: If true, sneaking players will make grass, snow, dead bushes, and wheat disappear temporarily essentially leaving a trail behind the invisible player
• config trailTime: The amount of time in seconds that the trail of missing grass, snow, etc will last behind a sneaking player

Sneak messages, sneak-toggle, and toggle permissions removed

Invisibility will now be disabled if in the air such as flying or falling