Feature request

[CharlyMarie]

Hi Rémi

Both functions lavaanExtra::lavaan_reg() and lavaanExtra::lavaan_defined() are great and work well. Thanks :)

However, when computing mediations, we may need boostrapped standard errors (SE) and confidence intervals (CI). While the SE & CI of parameters reported with lavaan::parameterestimates() are the ones computed with boostrapped SE, standardized parameters reported with lavaan::standardizedsolution() are the ones computed with the standard delta method.

It would be nice to:

1. Specify in the documentation of lavaanExtra how SE and CI of standardized estimates are computed, especially when using boostraps, as this may not be well known;
2. Add an argument to both lavaanExtra::lavaan_reg() and lavaanExtra::lavaan_defined() to get boostrapped SE & CI of standardized coefficients.