Update definition of BreslowDayFunction

[christianhaargaard]

Call the function from the DescTools package.

[github-actions]

Test Results

 1 files  ±0   7 suites  ±0   17s ⏱️ -1s
30 tests ±0  30 ✅ +1  0 💤 ±0  0 ❌  - 1 
68 runs  ±0  68 ✅ +1  0 💤 ±0  0 ❌  - 1 

Results for commit 70b8e68. ± Comparison against base commit 18abe6e.

♻️ This comment has been updated with latest results.

[github-actions]

Code coverage

Name	Coverage (%)
chefStats	79.51
R/across_strata_across_trt.R	38.33
R/barnard_test.R	90.91
R/BreslowDayFunction.R	100.00
R/building_blocks.R	91.67
R/by_strata_across_trt.R	97.14
R/by_strata_by_trt.R	95.94
R/fisher_vs_barnard.R	100.00
R/hedges_g_.R	0.00
R/odds_ratio_amnog.R	92.31
R/relative_risk.R	100.00
R/risk_diff.R	100.00
R/two_by_two_x.R	77.61
R/use_chefStats.R	47.17
R/utils.R	0.00
R/validate_breslow_day.R	82.35

[github-actions]

Github pages

Review the pkgdown webpage for the PR here