add classes for GVAR and GVARX
lm using graphical covariance matrix
first draft of GVAR
first draft of GVARX
t(x) %*% x should be akin to var(x) * nrow(x).  Need to scale by nrow before taking glasso
export design matrices helper functions
corrected graphical lm implementation
fastMlm returns labeled coefficient matrix
fix bug in prediction with freq parameter specified
fix bug in periodIndex and lastSeason
regen docs
fix fastMlm doc
Merge pull request #26 from jeffwong/graphicalVAR2

Graphical var2