corHMM example in ASR vignette + fixed GeoSSE states to endemicity

[TheoPannetier]

Fix

• 7

• 17

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.10% :tada:

Comparison is base (ab90377) 89.96% compared to head (1746488) 90.06%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #24 +/- ## ========================================== + Coverage 89.96% 90.06% +0.10% ========================================== Files 57 57 Lines 2002 2004 +2 ========================================== + Hits 1801 1805 +4 + Misses 201 199 -2 ``` | [Files Changed](https://app.codecov.io/gh/joshwlambert/DAISIEprep/pull/24?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Joshua+Lambert) | Coverage Δ | | |---|---|---| | [R/endemicity\_to\_sse\_states.R](https://app.codecov.io/gh/joshwlambert/DAISIEprep/pull/24?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Joshua+Lambert#diff-Ui9lbmRlbWljaXR5X3RvX3NzZV9zdGF0ZXMuUg==) | `66.66% <100.00%> (+6.20%)` | :arrow_up: |

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[TheoPannetier]

Back to draft for now, as I'm working on the vignette (#7)

[joshwlambert]

@TheoPannetier thanks so much for adding this section to the vignette! It reads really well and is a good addition to the package.

Thanks also for addressing the issue I raised (#17).

I will merge these additions into the main branch and then get the package ready for a release (both on GitHub and on CRAN).