New release for eo-0.61.1

See #411, release log:

• c9cac35 by @yegor256: #411: Update EO version to 0.6...
• eebbd6e by @yegor256: Add author Maxim Trunnikov to ...
• 2ffcb17 by @yegor256: Refactor build system to use $...
• ea26dfe by @yegor256: Move objectionary files to obj...
• e284a2a by @yegor256: Refactor dependency handling a...
• 06f6218 by @yegor256: Remove outdated and unnecessar...

Released by Rultor 2.0-SNAPSHOT, see build log