Add nodeType field in Trace.Entry

[Jesper Öqvist]

It would be useful if the node type was separated from the attribute signature in the Trace.Entry class:

class Entry {
  ...
  public final String nodeType;
  ...
}

[Jesper Öqvist]

Added nodeType field in Trace.Entry

fixes issue #170 (bitbucket)

→ <<cset c6008a2004e5>>