5.1.6

What's Changed

• Updated for RIOS v2 by @petebunting in #69
• Added functions to calculate vector area and length
• Added function rsgislib.tools.filetools.sort_file_by_datetime
• Added new module droneutils with some functions for creating vector flightlines from individual photos with the GPS data either within the image headers or from an external file.
• Added function rsgislib.droneutils.define_extern_gps_in_imgs to use an external GPS data to populate image headers.
• Updated exif functions in rsgislib.tools.imagetools module
• A number of code updates and improvements identified by ruff

Full Changelog: 5.1.5...5.1.6