::Fixnum is deprecated

Hi,

As of Ruby 2.4 ::Fixnum is deprecated:

`$ asepsisctl diagnose`
`/Library/Application Support/Asepsis/ctl/lib/micro-optparse.rb:47: warning: constant ::Fixnum is deprecated`
`Your Asepsis installation seems to be OK`

I don't know Ruby, but I made the following change in 'micro-optparse.rb':

`...`
`# Fixnum is no more BEC Sunday, January 29, 2017 at 3:54:10 PM`
`# klass = o[2][:default].class == Fixnum ? Integer : o[2][:default].class`
` klass = o[2][:default].class == Integer ? Integer : o[2][:default].class`
`...`

It seems to fix the warning, but is it a valid fix?

Beau.