v0.1.7: lot of features and UI fixes

• Refactored the TUI code to use an MVU architecture
• Added a tree widget view for directory traversal which is more intuitive
• Integrated fuzzy search
• Better, less crowded UI
• O(1) memory streaming optimization for aggregation with 300x less RAM usage
• added --compress flag for writing gzip compressed output
• piping support added for filename lists
• png image copying added
• token counting added
• autodetection and skipping of binaries
• xml wrapping