I'd also mention in the PR that you're happy to take over maintenance, if the repo owner is too busy. I recently did this with gulp-msbuild. If you get no response from the original owner (properly abandoned), I suggest a fork, coming up with a good name, including the original repo in a link in the readme & credits and publishing. I did something similar for the javascript package cnfg, after fixing a bug, whilst the original maintainer was hesitent to update from a PR (he did, after a while, and I marked my fork as obsolete)
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I'd also mention in the PR that you're happy to take over maintenance, if the repo owner is too busy. I recently did this with
gulp-msbuild. If you get no response from the original owner (properly abandoned), I suggest a fork, coming up with a good name, including the original repo in a link in the readme & credits and publishing. I did something similar for the javascript package cnfg, after fixing a bug, whilst the original maintainer was hesitent to update from a PR (he did, after a while, and I marked my fork as obsolete)