Thanks for making `invertbucket`! I used it to import my bitbucket repositories and ran into a few issues: 1. `invertbucket` should check that the machine has

Thanks for making `invertbucket`! I used it to import my bitbucket repositories and ran into a few issues: 1. `invertbucket` should check that the machine has `hg` installed. (I accidentally ran it on a machine that didn't.) 2. Say my sr.ht username is "thegreengiant" and my bitbucket repository is "abc". At the end of its run, `invertbucket` says: > Imported to: https://hg.sr.ht/srht_owner/abc https://hg.sr.ht/srht_owner/abc That URL 404s. It would be an improvement if `invertbucket` replaced "srht_owner" with "~thegreengiant".