Second beta release

• Adds rudimental multiline support; strings with \n in them get rendered as multi line strings.
• Content of textarea is replaced instead of added to on drag and drop.
• The width option now scales the whole canvas.
• On smaller displays buttons stay visible.
• Updated the test all possible arcs test case to be more easy to verify.
• Added build instructions in the wikum.

Released package contains source as well as the built and deployable variants.