Changelog

0.9.3

Let braket() take an optional third argument to render braket(u,A,v) as ⟨u|A|v⟩. The one argument case braket(a) is still rendered as ⟨a|a⟩ and the two argument case braket(u,v) is still rendered as ⟨u|v⟩.
Let expval() take an optional second argument to render expval(A,a) as ⟨a|A|a⟩. The one argument case expval(A) is still rendered as ⟨A⟩.
(breaking) Differentiated big-O Order(...) and little-o order(...).
Let Taylor series term taylorterm(...) automatically add parenthesis, so that e.g. tarlorterm(f,x,1+a,n-1)'s 1+a and n-1 can be put inside parenthesis when needed.
Fixed a rendering issue of Set(...) when it contains tall contents.
Removed the box(..) layer from tensor(...)'s phantom index.
Added 2D and 3D rotation matrix rot2mat(...) and rot3mat(...).
Added Gram matrix grammat(...).
(breaking) Removed gradient and divergence, since most users will use the abbreviated names grad and div. This prevents name collisions when users do wildcard importing, especially with Typst's built-in gradient that shows color gradients on texts.

Added show rules super-T-as-transpose and super-plus-as-dagger, so that ..^T and ..^+ can be rendered as a transpose operator and a dagger (i.e. conjugate transpose) operator, respectively, just like handwriting.
Adjusted spacing for dd(), following advice in TeXBook Chapter 18. The intra spacing can be disabled by a new optional argument compact:#true.
Fixed a spacing issue of vecrow(..).
(breaking) Let iprod(..) be rendered in the more familiar inner product ⟨a,b⟩, instead of ⟨a|b⟩--that can be done with braket(a,b).
Added optional argument big:#true to Jacobian matrix and Hessian matrix, so that the fractions can be rendered in an "uncramped" form. The default is the "cramped" form just like LaTeX.
Added taylorterm(...) to display terms in the Taylor series.

Changed the minimum Typst version to 0.10.0.

Added CI.
(breaking) Let va(...) (vector arrow) be not bold, according to the ISO standard.