add more tests and integration tests

See #173, release log:

• 20f4b04 by @rultor: Merge branch '__rultor'
• 722a9fb by @yegor256: #173: tests off
• 8f11d61 by @yegor256: #173: fix
• c2d3c01 by @yegor256: #173: copy fixed
• 0699ff8 by @yegor256: #173: rename
• 5074696 by @yegor256: #173: PhEta
• 3d94a22 by @yegor256: #173: PhOnce
• 71356cb by @yegor256: #173: PhMethod, PhCopy, PhWith
• 3a02194 by @yegor256: #173: more tests
• fa204e0 by @yegor256: #173: more
• b638c77 by @yegor256: #173: typos
• ca14470 by @yegor256: #173: rename to AtLambda
• f847b22 by @yegor256: #173: MainTest
• f6a655b by @yegor256: #173: test enabled
• 09f3467 by @yegor256: #173: txt
• fb05924 by @yegor256: #173 version up
• ae5bca4 by @yegor256: Merge pull request #171 from a...
• 9a051d8 by @yegor256: Merge branch 'master' into mas...
• 5f82f47 by @yegor256: Merge pull request #172 from n...
• 13ff5a1 by @nlchar: Fixed the broken link to the e...
• and 1 more...

Released by Rultor 1.69.1, see build log