Highly untested and may break world

Current release unspecified

• update gradle wrapper and add missing plugins to build.gradle
• Added Github Actions * Github Actions Gradle * Update gradle.yml * Delete .travis.yml
• Sync
• Moved debug printer (not backwards compat), Added listener to catch print messages Listener was added to redirect print lines to external window from the main console.
• Changed IPos3D to extend IPos2D, Added default conversion to IPos2D
• Version 0.2.6
• Fixed rounding errors for int conversion in pos classes
• add changelog task