This is quick list of some possible fixes for the next revision of quantreg
Version:  June 11 2004

1.  refine the choice of eps parameter in rq.fit.fn  (this has been a
perennial problem.  As several examples show, it is sometimes possible
to get into trouble with the current 1e-6 tolerance with rq.fit.fn
returning NaN's while a  more relaxed tolerance say 1e-4 produces a
good answer, verifiable from "br".

2.  Introduce percentile methods for the bootstrap methods.
