refresh

See #19, release log:

• 7eeadbf by @yegor256: #19 links
• 96e01bb by @yegor256: #19 site
• 8984bf8 by @yegor256: #19 up
• 13a7684 by @yegor256: rultor config refreshed
• 08df9db by @yegor256: github actions refreshed
• c4acc34 by @yegor256: .github/PULL_REQUEST_TEMPLATE....
• d7bac68 by @yegor256: .github/ISSUE_TEMPLATE.md remo...
• 4dc2b59 by @yegor256: travis config removed
• ccb67e3 by @yegor256: gha added
• cd963f1 by @yegor256: Merge pull request #13 from jc...
• f859ce2 by @renovate[bot]: Add renovate.json
• df4b67e by @yegor256: openjdk7 removed
• d78ecf1 by @yegor256: openjdk8 instead of oracle
• f2cf144 by @yegor256: fixed versions for rultor
• deeefdc by @yegor256: xcop and est fixed version in ...
• b79fb55 by @yegor256: pdd fixed version in Travis
• b1667ce by @yegor256: Ruby 2.6.0 in Travis
• 33a8261 by @yegor256: elegantobjects.org HTTPS
• 290bfdf by @yegor256: Location of home repo changed
• c48cbee by @yegor256: EO badge changed
• and 93 more...

Released by Rultor 2.0-SNAPSHOT, see build log