Increment/Decrement numbers and 0.1 step option

[Roman52]

Hello!
Thank you for the plugin!
Two questions:

1. Is it possible to add Increment/Decrement numbers by 0.1 and shortcut for it? (The minimal step for "Shift-down more" is 2. I can't set 0.1 in settings).
   

2. For example:
   I have 3px in the css file and I am trying to get -3px by shortcut "Shift-Down", but I can't do it because after -1 it is finished, or I get --1. See: https://i.imgur.com/MXjNgXV.gifv