Begun adding dtrsv and tests
full working dtrsv
merged from master
Implemented Dsyr2 with tests
Fixed bad inc comparison in Dger
Added dsymm test to cblas
Merge pull request #40 from gonum/improvedtrsv

Improvedtrsv
Merge pull request #41 from gonum/adddsyr2

Implemented Dsyr2 with tests
Merge pull request #42 from gonum/fixdgerinc

Fixed bad inc comparison in Dger
Working implementation of Dtpmv with tests
Added tests for Dtpsv
Working implementation of Dtpsv
Added working Dspmv and tests
Added working Dspr and tests
Added Dspr2 and tests
Added flattenTriangular function and test
Style improvements to flatten triangular
Merge pull request #43 from gonum/addflattentri

Added flattenTriangular function and test
started to add dsymm but not working
removed flatten to pull from master