deseason uses vector for freq instead of scalar
style
documentation and interface improvements
fix bug when freq = NA, remaining was 0 instead of original time series
proper s3 method for ridge
first commit of GroupVAR
update docs for group var
Sparse VAR now uses elastic net penalty instead of pure lasso
GroupVAR uses elastic net penalty instead of pure lasso
fix docs
Merge pull request #24 from jeffwong/grouplasso

Grouplasso
regenerate docs
add classes for GVAR and GVARX
lm using graphical covariance matrix
first draft of GVAR
first draft of GVARX
fix conflict in classes