fixed issues with RNG.
added bootstrapping functionality for the de-sparsified Lasso
added the missing Z & Z functionality for the lasso projection method
changed condition for warning message for confidence intervals
with multi.split.
reduced computing time for examples in lasso.proj,
clusterGroupBound and plot.clusterGroupBound.
fixed tests using parallel option on Windows.
temporary removed tests for groupBound due to problem
with mvrnorm (reproducability on different platforms).
new argument suppress.grouptesting in ridge.proj
and lasso.proj to speed up computation.
argument verbose instead of trace in
multi.split and stability.
new functions to generate reference data sets, see
rXb, rX and rb.
replaced print and cat statement with message statements that can be suppressed.
fixed a bug of some estimators (e.g. lasso.proj) setting seeds
added NEWS and CITATION file.