Utah risk model

[JakeWags]

Work in progress

Depends on #75

This draft PR includes two vignettes.

1. utah_risk_model shows the creation process of a risk model for Utah counties, with a relative risk based on the average computed risk for every county. The exact formulation is a draft and likely to change depending on needs.
2. contact_matrix_sensitivity_washington shows a contact matrix sensitivity analysis for Washington County, UT. This vignette highlights differences between Polymod, Adjusted Polymod (used in Shortcreek modeling), contactdata (an extrapolated Polymod dataset applied to the United States), and EpiStorm survey data.

[codecov]

Codecov Report

❌ Patch coverage is 61.39241% with 61 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
R/getCensusData.R	0.00%	43 Missing ⚠️
R/finalsize_parallel.R	74.54%	14 Missing ⚠️
R/finalsize.R	93.33%	4 Missing ⚠️

Files with missing lines	Coverage Δ
R/finalsize.R	94.02% <93.33%> (+12.21%)	⬆️
R/finalsize_parallel.R	74.54% <74.54%> (ø)
R/getCensusData.R	61.86% <0.00%> (-9.18%)	⬇️

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