v0.8.1.0

• (Add) Tools can now run inside a ROI (#49)
• (Add) Layer preview: Hold-Shift + Left-drag to select an ROI (Region of interest) on image, that region will be used instead of whole image when running some tools
• (Add) Layer preview: Hold-Shift + Hold-Alt + Left-drag to select and auto adjust the ROI to the contained objects, that region will be used instead of whole image when running some tools
• (Add) Layer preview: Hold-Shift + Right-click on a object to select its bounding area, that region will be used instead of whole image when running some tools
• (Add) Layer preview: ESC key to clear ROI
• (Add) Layer preview: Overlay text with hints for current action
• (Add) Tool - Move: Now possible to do a copy move instead of a cut move
• (Add) Arrow wait cursor to progress loadings
• (Change) Layer preview: Hold-Shift key to select issues and pick pixel position/brightness changed to Hold-Control key
• (Change) Layer preview: Shift+click combination to zoom-in changed to Alt+click
• (Fix) CTB v3: Bad file when re-encoding