Changes

• Throw proper exception when the number of arguments for a setter meth…
• #467 add missing methods for SpriteBatch (#474)
• added Int16Array; test, compiler code
• added more useful methods on 2D context and HTMLImageElement (#482)
• Bump junit from 4.13 to 4.13.1 (#468)
• Bump mockito-core from 3.5.13 to 3.5.15 (#470)
• Bump picocli from 4.5.1 to 4.5.2 (#469)
• Bump spring-boot-maven-plugin from 2.3.4.RELEASE to 2.4.0 (#477)
• Bump mockito-core from 3.5.15 to 3.6.28 (#480)