Enhancement

Label names in chatwoot only support alphabets, numbers, hyphen and underscore.
At the moment the available validation doesn't show the user any errors, which would leave the user confused.

So let's add a validation error describing this behaviour

Current behaviour

<img width="1273" alt="Screenshot 2020-10-02 at 4 29 03 PM" src="https://user-images.githubuserconten

Displaying the current tool number {after T0/T1/T2/...) on the screen would be helpful with MMU2 or other toolchanger.
The number can be displayed inside the nozzle picture.

It has been a pleasure for me to contribute to all of you 2 versions of this tool.

I've been working on other open source projects that I'm about to release for you, so I haven't finished trape version 3.0.

But, I invite you and the entire community that has used this project, to collaborate with some lines of code, implementing your own ideas and improving trape, turning it into a project o

This is just a FYI issue to notify that you were added to the curated awesome-humane-tech in the 'Social media' category, and - if you like that - are now entitled to wear our badge:

By addin