Add a lack-of-fit test

- Switch an example dataset in the test setup to a dataset with
replicates, adapt tests
- Skip the test for lrtest with an update specification as it does not
only fail when pkgdown generates static help pages, but also in testthat

1 files changed, 2 insertions, 0 deletions

diff --git a/NEWS.md b/NEWS.md
index 395cd623..965105f4 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,7 @@
 # mkin 0.9.49.8 (unreleased)
 
+- 'loftest': Add a lack-of-fit test
+
 - 'plot_res', 'plot_sep' and 'mkinerrplot': Add the possibility to show standardized residuals and make it the default for fits with error models other than 'const'
 
 - 'lrtest.mkinfit': Improve naming of the compared fits in the case of fixed parameters