Adding a Highlight Button to Trix

[@HarryTopper-q6c]

Super awesome. I will use the technique to add H2, H3, H4 etc to Trix. Yay!!!

[@anonymfa2646]

Hello est-ce que vous avez réussir à ajouter les H2 à H6 ?

[@rodandnathalie]

Thanks for this! I've been wanting to do something similar. Very helpful.

[@jl789nz]

This is prety cool. Also your keyboard is super loud.