* Fixed bug where inlink and outlink matrices were incorrectly sorted.
* Fixed bug where inlink and outlink matrices were incorrectly sorted.

Fixed
=====

* It appears that np.unique does not always return the index to the first of
  every value encountered in an array. This sometimes caused errors in
  building the inlink and outlink matrices by having the first row of the
  matrix containing a higher number link than the second row. The fix is to
  sort the columns so that the first row always contains a lower indexed
  link. This ordering may not be important though but was done just to be
  compatible with an older revision. If the ordering is not important, the
  sorting step should be removed.
  


decvalts/landlab,amandersillinois/landlab,ManuSchmi88/landlab,Carralex/landlab,decvalts/landlab,cmshobe/landlab,amandersillinois/landlab,landlab/landlab,landlab/landlab,RondaStrauch/landlab,Carralex/landlab,csherwood-usgs/landlab,landlab/landlab,SiccarPoint/landlab,laijingtao/landlab,ManuSchmi88/landlab,SiccarPoint/landlab,Carralex/landlab,csherwood-usgs/landlab,ManuSchmi88/landlab,cmshobe/landlab,laijingtao/landlab,cmshobe/landlab,RondaStrauch/landlab,RondaStrauch/landlab