Custom labels with text_format == 'simple' or text_format == 'full'

[slagtermaarten]

Hi,

Thanks for developing and maintaining this package first and foremost!
I'd like to show Jensen-Shannon divergence metrics between groups instead of statistical tests and so StatTest to implement a custom 'test' (rationale: my samples aren't completely independent). Is there a way to omit the 'p =' part in the Pvalue formatter module with text_format set to 'simple'? If not, could you add that? Thanks :)

Best, Maarten