Version 0.0.2

Fixed some things I missed for v0.0.1, all documentation related

• version badge in README is up to date
• update usage.md for version 0.0.2, fix outdated info/links and update version number
• move license to LICENSE.md in package root
• add changelog
• add link to changelog in readme

Version 0.0.1

Initial release. Contains barebones tools needed to manage a realistically moving sun with this library.

• Environment resource - input the values that control the sun position
• Sun component - attach it to your directional light for the sun
• RealisticSunDirectionPlugin plugin - sets up a default Environment and the system that updates Sun entities using the values stored in Environment