data-validation

I get this warning when committing:

@rjsf/core: ⚠ Some of your tasks use `git add` command. Please remove it from the config since all modifications made by tasks will be automatically added to the git commit index.

Describe the solution you'd like
Currently, there are some RST files that contain code examples within a .. code-block. This code blocks may break when we implement new features to the package and break the API.
We need some mechanism that validates the code blocks in the RST docs are valid, and fail the PR check if something is broken.

We can use docutils or some other alternative for

Describe the bug
pa.errors.SchemaErrors.failure_cases only returns the first 10 failure_cases

• I have checked that this issue has not already been reported.
• I have confirmed this bug exists on the latest version of pandera. 0.6.5
• (optional) I have confirmed this bug exists on the master branch of pandera.

Note: Please read [this guide](https://matthewrocklin.c

We get the return annotation for free, so we should allow users to do something with it.

Currently, if sending email fails because the email server is temporarily offline or overloaded, the only choice of action is to rerun the whole validation. This can be very expensive, and may require manual intervention if the program is running as part of an automatic workflow.

It would be better if the program detected the error in sending email and did its own wait-and-retry loop. This wo