5.1.0

What's Changed

• Revised classification modules and functions by @petebunting in #66
• Increase circleci resource size for CI by @petebunting in #67
• Add function to create lines away from a point at defined angle.
• Added function to split vector layer into testing, training and validation sets.
• Added function rsgislib.vectorutils.createvectors.create_random_pts_in_radius which produces a random set of points within a radius.
• Added functions to calculate elevation roughness metrics
• Updated documentation - particularly within the classification module
• Updating functions to provide typing information
• Added further tests for various functions

Full Changelog: 5.0.17...5.1.0