Add/Remove Sprite Sheet Gutter, Padding, and Spacing

Takes a heavily-packed sprite sheet with no padding between sprites/tiles and adds padding or spacing. Can also create a "gutter" around seamless tiles, filling the padding with the tile's edge pixels, preventing seams from appearing when using the tile in a 3D rendering environment due to interpolation.

Can also remove padding/spacing from a sprite sheet.

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Update Version 1.1 (5/17/12):
- Script now supports non-opaque sprites
- Moved scripts to Filters > Sprite Sheets menu

Update Version 1.0:
- Added Remove Gutter script to remove padding/spacing
- Added edge behavior options
- Added spacing setting
- Added additional text to describe padding, spacing, and gutter