initial commit
add model/spec/fit classes
garch likelihood function
first draft of GARCH(1, 1) estimation
GARCH(1,1) estimation
minor refactoring
refactor likelihood function
replace Seq with DenseVector
GARCH(1, 1) forecasting
minor refactoring
Update README.md
Update README.md
Update README.md
minor refactorings
Merge remote-tracking branch 'origin/develop' into develop
Update README.md
Merge pull request #1 from ezhulenev/develop

GARCH(1,1) estimation and forecast