Syntax errors break XtextReconciler and outline #25

Attempting to parse the following snippet

console.log 'a',

causes the CoffeeRewriter to (correctly) raise a syntax error. However, the rewriter then removes all tokens following that error (at CoffeeRewriter:868). This causes the reconciler to throw an error (with the same symptoms as #19).

Throwing out the entire remainder of the parse, while safe, does not appear to be the correct action here.