release to crates.io

See #4, release log:

• a826072 by @h1alexbel: Merge pull request #19 from h1...
• 5453a05 by @h1alexbel: feat(#4): credentials format
• bad1046 by @rultor: Merge branch '__rultor'
• 6f2c0b4 by @h1alexbel: feat(#9, #7): 1 problem, 1 sug...
• 0ba68ed by @renovate[bot]: chore(deps): update zerocracy/...
• 30976fa by @rultor: Merge branch '__rultor'
• c2a1898 by @h1alexbel: Merge pull request #12 from h1...
• 55b6ddf by @renovate[bot]: chore(deps): update zerocracy/...
• 1bcb938 by @h1alexbel: feat(#10): codecov badge
• 84f8ef1 by @h1alexbel: feat(rultor): no nightly
• 400b11c by @h1alexbel: feat(#10): ignore markdown tab...
• 0052418 by @h1alexbel: feat(#10): valid years
• 774f1fd by @h1alexbel: feat(#10): back rultor
• f0998c2 by @h1alexbel: feat(#10): just integrated, cl...
• bc08f4a by @h1alexbel: feat(#7): cli docs
• a91ad57 by @h1alexbel: feat(#7): probe
• 0aa6907 by @h1alexbel: feat(#7): unused
• 5d78c25 by @h1alexbel: feat(#7): typo
• 6d95bfa by @h1alexbel: feat(#7): no --v
• 0f81604 by @h1alexbel: feat(#7): DEBUG on --verbose
• and 2 more...

Released by Rultor 2.0-SNAPSHOT, see build log