more public ctors

See #385, release log:

• 7fab56e by @yegor256: Merge branch 'master' of githu...
• 10d201e by @yegor256: #385 more ctors
• f5d6b13 by @rultor: Merge branch '__rultor'
• 186563b by @yegor256: #367 Decoded64Text removed
• fb615d2 by @yegor256: zerocracy badge

Released by Rultor 1.66.1, see build log