fix: reduce redundancy of grouping symbols #11
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In some cases groupings are used to indicate that a certain part of expression should be interpreted as a single term. For example in fractions:
(a + b) / (c + d), or when using scriptsx^(n-1)and so on.In such cases, the grouping symbols don't have to be rendered. For example$\frac{a + b}{c + d} \equiv \frac{(a + b)}{(c + d)}$ . The same holds for the scripts: $x^{n-1} \equiv x^{(n-1)}$ .
This PR solves that problem. Also, some structures are simplified by using
SimpleExpr::Interminstead ofSimpleExpr::Groupingwith ignored grouping symbols. This makes snapshots somewhat simpler.Additionally, block rendering in binary is now supported with
-b, --blockflag.