Different classifcation for := vs =

[ctrlaltdel121]

Is there a way to make the variables to the left of = different from those left of := ? Since one is assignment and one is declaration/assignment it would be nice to highlight the declarations.

I saw in #18 there was some discussion of how it would be hard to cover every case of variable declaration/assignment, but I think being able to highlight a newly-declared variable is really useful. From personal experience, when I do something like try to assign to an outer variable in a for loop, it pops out to me when I type := and the variable has a distinct color vs. =.

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