v7.7.1

[7.7.1] - 2025-09-02

• Added cwipc_play which plays a point cloud recording or single point cloud.
• Refactored visualizer, so cwipc_view and cwipc_play allow filtering and such while paused (#208)
• Filters optionally keep the source point cloud (#236)
• Added direction filter, which keeps only points oriented in a certain direction (#235)
• Progress with registration. (#232, #223)
• Python dependency upped to Python 3.12 (#237)