Issue 563: Change lookback to 90 time steps

[SamuelBrand1]

This small PR closes #563 .

All this PR does is change the lookback to 90 time steps. This removes the windowing effect on the Rt-without project whilst leaving a more reasonable default for any extension to a longer time series.

[github-actions]

Try this Pull Request!

Open Julia and type:

import Pkg
Pkg.activate(temp=true)
Pkg.add(url="https://github.com/CDCgov/Rt-without-renewal", rev="563-remove-inference-windowing", subdir="EpiAware")
using EpiAware

[seabbs]

LGTM. This brings the pipeline back into line with the original analysis plan as discussed f2f

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.96%. Comparing base (9b467f2) to head (2e3458a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #564   +/-   ##
=======================================
  Coverage   90.96%   90.96%           
=======================================
  Files          60       60           
  Lines         863      863           
=======================================
  Hits          785      785           
  Misses         78       78           

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