header for FI series

Published:

This is part of a series on computing the Fisher Information for Multivariate Autoregressive State-Space Models. [Part I: Background](https://eeholmes.github.io/posts/2016-5-18-FI-recursion-1/), [Part II: Louis 1982](https://eeholmes.github.io/posts/2016-5-19-FI-recursion-2/), [Part III: Harvey 1989, Background](https://eeholmes.github.io/posts/2016-6-16-FI-recursion-3/), [Part IV: Harvey 1989, Implementation](https://eeholmes.github.io/posts/2017-5-31-FI-recursion-4/).