Restrict values passed from initial optimisation to relaxed-rate model

[joshwlambert]

This PR puts an upper limit on initial parameter values that can be passed into the relaxed-rate DAISIE model. The upper limits are dependent on not allowing infinite values passed into DAISIE and to prevent values about the specified parameter upper bound.

@Neves-P If you agree I will make a minor version release after these changes are merged.

[codecov]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (99fc626) 65.75% compared to head (8e1dbc4) 65.58%.

❗ Current head 8e1dbc4 differs from pull request most recent head 016bba0. Consider uploading reports for the commit 016bba0 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #34      +/-   ##
==========================================
- Coverage   65.75%   65.58%   -0.17%     
==========================================
  Files          25       25              
  Lines        1203     1206       +3     
==========================================
  Hits          791      791              
- Misses        412      415       +3     

Files	Coverage Δ
R/run_daisie_ml.R	65.55% <0.00%> (-2.27%)	⬇️

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