* MathEval Variance and Stddev
* Fix tests and linting
* Typo
* Deal with streams when they are not tables
* `from toml` command
* From ods
* From XLSX
* From ics
* From ini
* From vcf
* Forgot a eprintln!
* custom value trait
* functions for custom value trait
* custom trait behind flag
* open dataframe command
* command to-df for basic types
* follow path for dataframe
* dataframe operations
* dataframe not default feature
* custom as default feature
* corrected examples in command