v 3.0.0 Chrome

MatTalX now works where you write, without opening the popup.

Other changes:

1. A suggestion shows what the command gives, e.g., \implies: ⟹.
2. A command takes what follows it, curly brackets or not, e.g., '\mathbf x' and '\mathbf {x}' both give 𝒙.
3. Converting a text a second time no longer breaks it.
4. Converting is about ten times faster.