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Make lexer emit token ranges instead of just locations#76

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WebFreak001 wants to merge 2 commits intodlang-community:masterfrom
WebFreak001:parser-ranges
Open

Make lexer emit token ranges instead of just locations#76
WebFreak001 wants to merge 2 commits intodlang-community:masterfrom
WebFreak001:parser-ranges

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With this we can more easily check for whitespace and comments between
tokens, without needing a large overhaul of the lexer range.

Helps tools being able to retain comments and even whitespace when
inserting content, since they are able to slice the input.

Additionally error messages are more accurate / with length with this.

`tag;` is not equal to `tag\n` anymore

The tests previously tested this sometimes, but this was never used.

I think it makes sense to just test for it
With this we can more easily check for whitespace and comments between
tokens, without needing a large overhaul of the lexer range.

Helps tools being able to retain comments and even whitespace when
inserting content, since they are able to slice the input.
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