1.9.0

• #67 DirectoryCodeResolver no longer does file watching. This removes a problematic com.sun.nio dependency and was likely not used by 99% of jte users. In case you need the file watching on your project, please add the jte-watcher dependency as described here.
• #61 You may now configure the class path used by the compiler via TemplateEngine::setClassPath
• #65 modification times are only stored for existing files in DirectoryCodeResolver
• Empty values for localization keys now result in null Content, since it makes no sense to render them.
• #68 fixed Gradle path setup in examples