Overwriting Texture Importer will force overwrites Sprite slice setting

[Hiroki Omae]

Overwriting Texture Importer for 2D sprite will force overwrite slice setting. Slice setting can be unique to each textures, so that it would be nice if there is an option to control whether you want to keep it or not.

[Hiroki Omae]

Added Sprite sheet overwriting option. ( 215c28b )

[Hiroki Omae]

Resolved with 215c28b . Added "Configure Sprite Sheets" checkbox in Overwrite Import Settings