Nim v2: get rid of style insensitivity

I'll be honest and say it's something I really dislike about Nim.

Is it why I don't use it more? No, but I think case insensitivity was a poor decision for a variety of reasons and encourages problems down the road. I think making it case sensitive would just take away one more excuse, real or perceived.

I guess I can think of reasons for case sensitivity, but no real convincing (to me) arguments for case insensitivity. The arguments in favor of keeping insensitivity just seem to come down to resistance to change.

I think if they did remove insensitivity then there would be an immediate cry for "import restyling" of some kind, but I'm not sure that is so hard to do at the same time. Something like import lib {.unstyled.} would make the feature both more precise (just imported symbols, not also w_HIl_E) and more explicit (just listed libraries). And it could (maybe) be more explicit still like import lib {.style: asCamel.}