Add underline command
Add support for turning on/off fontB
Add support for upside down printing
Add Flurin to contributors
Fix linting and consistency issues
Fix trailing comma
Add support for barcodeHeight and barcodeTextPosition
Add code for barcode printing (missing tests)
Fix linting errors
Add support for passing multiple arguments through verifyCommand
Throw errors instead of just continuing and doing nothing
Add some clarifying comments about barcode types
Test all barcode types
Change test names to reflect what it tests for
Throw errors instead of silently continueing
Make whitespace consistent
Rename .fontB() to .small()
Merge pull request #1 from flurin/feature-text

Thanks for your reactivity!
Merge branch 'feature-text' into feature-barcode
Merge pull request #2 from flurin/feature-barcode

Great! Thanks! I'll test it during the week.

Thanks for these great additions.

Regards.

Xavier