v0.5.0

• A reimplementation of the Neural Network class (#749), as well as memory leak fixes, updated documentation, multilayer support, and test coverage.
• A refactoring of the Object Detector class (https://github.com/ml5js/ml5-library/pull/693/files) as well as documentation updates, fixes to async support, and the addition of video support.
• Add ml5.js Community Statement to console.log - #800
• Include an unminified version of the library in the distribution - #811
• Many small bug fixes and additional updates to the documentation!