movitz-mode.el and fi:: functions

Hi,

I'm trying out movitz-mode.el just for fun, but when I switch to
movitz-mode I get the following error:

  Symbol's function definition is void: fi::initialize-mode-map

I've never heard of the fi:: package and didn't realize that emacs
even had namespaces at all. Am I missing a required package somewhere?

-- 
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