Update for Go 1.26

[bobg]

• Handle new(expr)
• Handle recursive type params

[github-actions]

Modver result

This report was generated by Modver,
a Go package and command that helps you obey semantic versioning rules in your Go module.

This PR requires (at least) an increase in your module's minor version number.

minimum Go version changed from 1.23.0 to 1.26
  Minor

[coveralls]

Pull Request Test Coverage Report for Build 21958501390

Details

• 43 of 43 (100.0%) changed or added relevant lines in 2 files are covered.
• 8 unchanged lines in 3 files lost coverage.
• Overall coverage increased (+0.8%) to 71.875%

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Files with Coverage Reduction	New Missed Lines	%
hist.go	2	83.58%
stmt.go	2	76.24%
expr.go	4	75.05%

Totals
Change from base Build 21801680734:	0.8%
Covered Lines:	943
Relevant Lines:	1312

---

💛 - Coveralls