What's changing
Conditionally accept underscores in numbers (e.g. %0000_0101) if the user has enabled the feature above the current line
Motivation for change
Currently underscores are parsed as invalid no matter what:

Background/Notes
As this is the first issue of this kind, it will probably involve creating some kind of features structure to keep track of which features are turned on
What's changing
Conditionally accept underscores in numbers (e.g.
%0000_0101) if the user has enabled the feature above the current lineMotivation for change
Currently underscores are parsed as invalid no matter what:

Background/Notes
As this is the first issue of this kind, it will probably involve creating some kind of features structure to keep track of which features are turned on