Don't use syntactic sugar only available in julia >= 16 #104
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The current project.toml claims compatibility for julia "1".
The function call "p(x, getdata(A), b, update_matrix; tol, kwargs...)"
as shorthand for "p(x, getdata(A), b, update_matrix; tol=tol, kwargs...)"
only became valid in Julia 1.5. Compare
https://docs.julialang.org/en/v1.4/manual/functions/#Keyword-Arguments-1
with
https://docs.julialang.org/en/v1.5/manual/functions/#Keyword-Arguments
which adds the paragraph starting with "When a bare identifier or dot
expression occurs after a semicolon,"