title: Appendable with a capacity limit
body: <p>I would like a class which implements Appendable, writes into an in-memory string (i.e. StringBuilder or StringWriter), but imposes a hard limit on the maximum capacity. </p>
  
  <p>I did not find something similar in the Java standard library, nor in any 'commons' library, such as Guava or Apache Commons. </p>
  
  <p>I specifically need the Appendable interface implementation, since this is a requirement of a 3rd party library which I use.</p>