Removing a test of mse() when lookup_estimates = TRUE. This was a timing based test that was too flaky to be a reliable indicator of function performance across all test environment. Increasing the time tolerance in update 1.0.1 did not meaningfully resolve this issue as hoped.
Setting tests involving lookup_estimates() to skip_on_cran with testthat due to flaky behavior with Linux development environments on CRAN. These tests are working on all other testing environments.
Setting tests involving estimate_mse() to skip_on_cran because they are resulting in long build times for Windows and Debian.
mse() using lookup_estimates option uses more generous comparison to ensure that test doesn't fail unnecessarily when estimates are correctly looked up.