4.0.0-alpha.1

• jQuery is no longer required. v4 doesn't require any libraries, actually.
• It's built using Svelte, which means it compiles down to vanilla JS.
• PNotify now has an ES6 module build.
• text_escape and title_escape have been replaced by trust_text and trust_title, and the default behavior changed.
• insert_brs option has gone away. (Text and title now have white-space: pre-line;.)
• The default width was raised from 300px to 360px.