v1.15.0

What's Changed

• hash: do not salt with Go runtime version by @rogpeppe in #292
• testscript: reset verbose on new blocks by @myitcv in #293
• testscript: rewind last block if it was not in error by @myitcv in #294
• testscript: protect against no-op uses of cmp by @mvdan in #295
• goproxytest: add Setup by @rogpeppe in #303
• update Go, fix, add /@latest to goproxytest by @mvdan in #302
• internal/vcs: remove SYSTEMROOT workaround for Windows by @mvdan in #299
• goproxytest: add overlay capability by @rogpeppe in #304

Full Changelog: v1.14.1...v1.15.0