added defcentup
fix #613
getting td to work like other gms
got it to use vcs.elemeents
got it to use vcs.elemeents
got it to create  new ones and start plotting
merged master in this
ok we got a proper taylor diagram, need to move test into right place
test1 for taylordiags working
got 2 quad working
added quad taylor test to suite
Merge pull request #840 from UV-CDAT/issue_735_taylordiagrams

Issue 735 taylordiagrams