Cannot get basic boolean validation result

[Relequestual]

Add option to output validation results as booleans.
Related to #58

[jviotti]

100%. It's on my radar to extend Blaze to output using the current standard output formats. Also related to what you are saying here, currently the CLI only does Blaze validation with error output, which is not the "fastest" mode of evaluation. Blaze has more optimisations enabled if you only require a boolean, which we are not exposing on the CLI at all.